51699751087152 has 320 divisors, whose sum is σ = 167401855595520. Its totient is φ = 13405969317888.

The previous prime is 51699751087139. The next prime is 51699751087199. The reversal of 51699751087152 is 25178015799615.

It is a super-2 number, since 2×51699751087152² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 130166688 + ... + 130563264.

It is an arithmetic number, because the mean of its divisors is an integer number (523130798736).

Almost surely, 2^{51699751087152} 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 51699751087152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83700927797760).

51699751087152 is an abundant number, since it is smaller than the sum of its proper divisors (115702104508368).

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

51699751087152 is a wasteful number, since it uses less digits than its factorization.

51699751087152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397428 (or 397422 counting only the distinct ones).

The product of its (nonzero) digits is 47628000, while the sum is 66.

The spelling of 51699751087152 in words is "fifty-one trillion, six hundred ninety-nine billion, seven hundred fifty-one million, eighty-seven thousand, one hundred fifty-two".