51425361361 has 32 divisors (see below), whose sum is σ = 58502424960. Its totient is φ = 44802700800.

The previous prime is 51425361331. The next prime is 51425361389. The reversal of 51425361361 is 16316352415.

It is not a de Polignac number, because 51425361361 - 2⁵ = 51425361329 is a prime.

It is a super-2 number, since 2×51425361361² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51425361361.

It is not an unprimeable number, because it can be changed into a prime (51425361311) 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, 4300651 + ... + 4312591.

It is an arithmetic number, because the mean of its divisors is an integer number (1828200780).

Almost surely, 2^51425361361 is an apocalyptic number.

It is an amenable number.

51425361361 is a deficient number, since it is larger than the sum of its proper divisors (7077063599).

51425361361 is a wasteful number, since it uses less digits than its factorization.

51425361361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12177.

The product of its digits is 64800, while the sum is 37.

The spelling of 51425361361 in words is "fifty-one billion, four hundred twenty-five million, three hundred sixty-one thousand, three hundred sixty-one".