51057492440 has 32 divisors (see below), whose sum is σ = 114910764480. Its totient is φ = 20417413632.

The previous prime is 51057492391. The next prime is 51057492457. The reversal of 51057492440 is 4429475015.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24752 + ... + 320511.

It is an arithmetic number, because the mean of its divisors is an integer number (3590961390).

Almost surely, 2^51057492440 is an apocalyptic number.

It is an amenable number.

51057492440 is an abundant number, since it is smaller than the sum of its proper divisors (63853272040).

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

51057492440 is a wasteful number, since it uses less digits than its factorization.

51057492440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348971 (or 348967 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 41.

The spelling of 51057492440 in words is "fifty-one billion, fifty-seven million, four hundred ninety-two thousand, four hundred forty".