51255404015120 has 320 divisors, whose sum is σ = 127052620111872. Its totient is φ = 19199213568000.

The previous prime is 51255404015099. The next prime is 51255404015143. The reversal of 51255404015120 is 2151040455215.

It is a super-2 number, since 2×51255404015120² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 16744658390 + ... + 16744661450.

Almost surely, 2^{51255404015120} 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 51255404015120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63526310055936).

51255404015120 is an abundant number, since it is smaller than the sum of its proper divisors (75797216096752).

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

51255404015120 is a wasteful number, since it uses less digits than its factorization.

51255404015120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4730 (or 4724 counting only the distinct ones).

The product of its (nonzero) digits is 40000, while the sum is 35.

The spelling of 51255404015120 in words is "fifty-one trillion, two hundred fifty-five billion, four hundred four million, fifteen thousand, one hundred twenty".