Search a number
-
+
68055481431 = 3272941908533
BaseRepresentation
bin111111011000011011…
…000011110001010111
320111122220101122212100
4333120123003301113
52103334200401211
651133025053143
74626323022210
oct773033036127
9214586348770
1068055481431
11269535aa533
12112337871b3
136557627652
143418680407
151b84a5c156
hexfd86c3c57

68055481431 has 48 divisors (see below), whose sum is σ = 119054295360. Its totient is φ = 36632010240.

The previous prime is 68055481391. The next prime is 68055481453. The reversal of 68055481431 is 13418455086.

68055481431 is a `hidden beast` number, since 6 + 80 + 55 + 481 + 43 + 1 = 666.

It is not a de Polignac number, because 68055481431 - 211 = 68055479383 is a prime.

It is a super-2 number, since 2×680554814312 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68055481631) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 379360 + ... + 529173.

It is an arithmetic number, because the mean of its divisors is an integer number (2480297820).

Almost surely, 268055481431 is an apocalyptic number.

68055481431 is a deficient number, since it is larger than the sum of its proper divisors (50998813929).

68055481431 is a wasteful number, since it uses less digits than its factorization.

68055481431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 908616 (or 908613 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 45.

The spelling of 68055481431 in words is "sixty-eight billion, fifty-five million, four hundred eighty-one thousand, four hundred thirty-one".

Divisors: 1 3 7 9 21 29 41 63 87 123 203 261 287 369 609 861 1189 1827 2583 3567 8323 10701 24969 74907 908533 2725599 6359731 8176797 19079193 26347457 37249853 57237579 79042371 111749559 184432199 237127113 260748971 335248677 553296597 782246913 1080245737 1659889791 2346740739 3240737211 7561720159 9722211633 22685160477 68055481431