51857132451144 has 32 divisors (see below), whose sum is σ = 129668186965920. Its totient is φ = 17282330038656.

The previous prime is 51857132451121. The next prime is 51857132451181. The reversal of 51857132451144 is 44115423175815.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 211173382 + ... + 211418805.

It is an arithmetic number, because the mean of its divisors is an integer number (4052130842685).

Almost surely, 2^{51857132451144} is an apocalyptic number.

It is an amenable number.

51857132451144 is an abundant number, since it is smaller than the sum of its proper divisors (77811054514776).

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

51857132451144 is a wasteful number, since it uses less digits than its factorization.

51857132451144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422597309 (or 422597305 counting only the distinct ones).

The product of its digits is 2688000, while the sum is 51.

The spelling of 51857132451144 in words is "fifty-one trillion, eight hundred fifty-seven billion, one hundred thirty-two million, four hundred fifty-one thousand, one hundred forty-four".