51625297980 has 36 divisors (see below), whose sum is σ = 156596737752. Its totient is φ = 13766746080.

The previous prime is 51625297963. The next prime is 51625297987. The reversal of 51625297980 is 8979252615.

51625297980 is a `hidden beast` number, since 5 + 1 + 625 + 2 + 9 + 7 + 9 + 8 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51625297987) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 143403426 + ... + 143403785.

It is an arithmetic number, because the mean of its divisors is an integer number (4349909382).

Almost surely, 2^51625297980 is an apocalyptic number.

It is an amenable number.

51625297980 is an abundant number, since it is smaller than the sum of its proper divisors (104971439772).

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

51625297980 is a wasteful number, since it uses less digits than its factorization.

51625297980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286807226 (or 286807221 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 54.

The spelling of 51625297980 in words is "fifty-one billion, six hundred twenty-five million, two hundred ninety-seven thousand, nine hundred eighty".