51105644260 has 48 divisors (see below), whose sum is σ = 117144300672. Its totient is φ = 18573408000.

The previous prime is 51105644159. The next prime is 51105644309. The reversal of 51105644260 is 6244650115.

It is a super-2 number, since 2×51105644260² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 331729 + ... + 460711.

It is an arithmetic number, because the mean of its divisors is an integer number (2440506264).

Almost surely, 2^51105644260 is an apocalyptic number.

It is an amenable number.

51105644260 is an abundant number, since it is smaller than the sum of its proper divisors (66038656412).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51105644260 is a wasteful number, since it uses less digits than its factorization.

51105644260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130804 (or 130802 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 34.

The spelling of 51105644260 in words is "fifty-one billion, one hundred five million, six hundred forty-four thousand, two hundred sixty".