51630556165256 has 64 divisors (see below), whose sum is σ = 98736143616000. Its totient is φ = 25306148125440.

The previous prime is 51630556165241. The next prime is 51630556165259. The reversal of 51630556165256 is 65256165503615.

It is not an unprimeable number, because it can be changed into a prime (51630556165259) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59204546 + ... + 60070286.

It is an arithmetic number, because the mean of its divisors is an integer number (1542752244000).

Almost surely, 2^{51630556165256} is an apocalyptic number.

It is an amenable number.

51630556165256 is a deficient number, since it is larger than the sum of its proper divisors (47105587450744).

51630556165256 is a wasteful number, since it uses less digits than its factorization.

51630556165256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 866502 (or 866498 counting only the distinct ones).

The product of its (nonzero) digits is 24300000, while the sum is 56.

The spelling of 51630556165256 in words is "fifty-one trillion, six hundred thirty billion, five hundred fifty-six million, one hundred sixty-five thousand, two hundred fifty-six".