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51061314602431 = 7731361208135281
BaseRepresentation
bin10111001110000101000111…
…00001001100010110111111
320200210102011210211012220001
423213002203201030112333
523143042033014234211
6300333124420335131
713520025655614040
oct1347024341142677
9220712153735801
1051061314602431
11152a6a88a22331
125888036b444a7
1322650a48c7353
14c87548d468c7
155d834e250ac1
hex2e70a384c5bf

51061314602431 has 32 divisors (see below), whose sum is σ = 59228772909696. Its totient is φ = 43113627648000.

The previous prime is 51061314602401. The next prime is 51061314602437. The reversal of 51061314602431 is 13420641316015.

It is not a de Polignac number, because 51061314602431 - 213 = 51061314594239 is a prime.

It is a super-2 number, since 2×510613146024312 (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51061314602437) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1447257511 + ... + 1447292791.

It is an arithmetic number, because the mean of its divisors is an integer number (1850899153428).

Almost surely, 251061314602431 is an apocalyptic number.

51061314602431 is a deficient number, since it is larger than the sum of its proper divisors (8167458307265).

51061314602431 is a wasteful number, since it uses less digits than its factorization.

51061314602431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38803.

The product of its (nonzero) digits is 51840, while the sum is 37.

Adding to 51061314602431 its reverse (13420641316015), we get a palindrome (64481955918446).

The spelling of 51061314602431 in words is "fifty-one trillion, sixty-one billion, three hundred fourteen million, six hundred two thousand, four hundred thirty-one".

Divisors: 1 7 73 511 1361 2081 9527 14567 35281 99353 151913 246967 695471 1063391 2575513 2832241 18028591 19825687 48017441 73419761 206753593 336122087 513938327 1447275151 3505273193 5359642553 24536912351 37517497871 99924294721 699470063047 7294473514633 51061314602431