51517625132500 has 30 divisors (see below), whose sum is σ = 112658742645218. Its totient is φ = 20607050052000.

The previous prime is 51517625132489. The next prime is 51517625132507. The reversal of 51517625132500 is 523152671515.

It can be written as a sum of positive squares in 5 ways, for example, as 4618768353424 + 46898856779076 = 2149132^2 + 6848274^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51517625132507) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 10303522527 + ... + 10303527526.

Almost surely, 2^{51517625132500} is an apocalyptic number.

51517625132500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51517625132500 is an abundant number, since it is smaller than the sum of its proper divisors (61141117512718).

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

51517625132500 is a wasteful number, since it uses less digits than its factorization.

51517625132500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20607050077 (or 20607050060 counting only the distinct ones).

The product of its (nonzero) digits is 315000, while the sum is 43.

The spelling of 51517625132500 in words is "fifty-one trillion, five hundred seventeen billion, six hundred twenty-five million, one hundred thirty-two thousand, five hundred".