51162355000640 has 112 divisors (see below), whose sum is σ = 132159603581712. Its totient is φ = 18752827047936.

The previous prime is 51162355000633. The next prime is 51162355000657. The reversal of 51162355000640 is 4600055326115.

It can be written as a sum of positive squares in 8 ways, for example, as 663025861696 + 50499329138944 = 814264^2 + 7106288^2 .

It is a junction number, because it is equal to n+sod(n) for n = 51162355000594 and 51162355000603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44315639 + ... + 45455478.

It is an arithmetic number, because the mean of its divisors is an integer number (1179996460551).

Almost surely, 2^{51162355000640} is an apocalyptic number.

It is an amenable number.

51162355000640 is an abundant number, since it is smaller than the sum of its proper divisors (80997248581072).

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

51162355000640 is a wasteful number, since it uses less digits than its factorization.

51162355000640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89771284 (or 89771274 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 38.

The spelling of 51162355000640 in words is "fifty-one trillion, one hundred sixty-two billion, three hundred fifty-five million, six hundred forty", and thus it is an aban number.