51425506366256 has 160 divisors (see below), whose sum is σ = 114949557043200. Its totient is φ = 22041698192640.

The previous prime is 51425506366249. The next prime is 51425506366259. The reversal of 51425506366256 is 65266360552415.

It is not an unprimeable number, because it can be changed into a prime (51425506366259) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1792627145 + ... + 1792655831.

It is an arithmetic number, because the mean of its divisors is an integer number (718434731520).

Almost surely, 2^{51425506366256} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51425506366256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57474778521600).

51425506366256 is an abundant number, since it is smaller than the sum of its proper divisors (63524050676944).

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

51425506366256 is a wasteful number, since it uses less digits than its factorization.

51425506366256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31207 (or 31201 counting only the distinct ones).

The product of its (nonzero) digits is 38880000, while the sum is 56.

The spelling of 51425506366256 in words is "fifty-one trillion, four hundred twenty-five billion, five hundred six million, three hundred sixty-six thousand, two hundred fifty-six".