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12816349006431 = 31923227136131643
BaseRepresentation
bin1011101010000000100111…
…1011100000101001011111
31200101020020101202102101210
42322200021323200221133
53134440340321201211
643131425514235503
72461644035043225
oct272401173405137
950336211672353
1012816349006431
1140a1423990063
12152ba89425b93
1371c76581b359
143244593a4b15
151735b16979a6
hexba809ee0a5f

12816349006431 has 64 divisors (see below), whose sum is σ = 18867074273280. Its totient is φ = 7702584215040.

The previous prime is 12816349006429. The next prime is 12816349006459. The reversal of 12816349006431 is 13460094361821.

12816349006431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12816349006431 - 21 = 12816349006429 is a prime.

It is a super-2 number, since 2×128163490064312 (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12816349006471) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 405013696 + ... + 405045338.

It is an arithmetic number, because the mean of its divisors is an integer number (294798035520).

Almost surely, 212816349006431 is an apocalyptic number.

12816349006431 is a deficient number, since it is larger than the sum of its proper divisors (6050725266849).

12816349006431 is a wasteful number, since it uses less digits than its factorization.

12816349006431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33276.

The product of its (nonzero) digits is 746496, while the sum is 48.

The spelling of 12816349006431 in words is "twelve trillion, eight hundred sixteen billion, three hundred forty-nine million, six thousand, four hundred thirty-one".

Divisors: 1 3 19 23 57 69 227 437 681 1311 1361 4083 4313 5221 12939 15663 25859 31303 31643 77577 93909 94929 99199 297597 308947 594757 601217 727789 926841 1784271 1803651 2183367 5869993 7105781 7182961 13827991 17609979 21317343 21548883 41483973 43066123 129198369 135009839 136476259 165208103 405029517 409428777 495624309 818256337 990520829 2454769011 2971562487 3138953957 9416861871 9776009921 18819895751 29328029763 56459687253 185744188499 224848228183 557232565497 674544684549 4272116335477 12816349006431