51118707504832 has 224 divisors, whose sum is σ = 120686146191360. Its totient is φ = 21224094336000.

The previous prime is 51118707504829. The next prime is 51118707504859. The reversal of 51118707504832 is 23840570781115.

It is a super-2 number, since 2×51118707504832² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51118707504832.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 112144323 + ... + 112599229.

Almost surely, 2^{51118707504832} 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 51118707504832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60343073095680).

51118707504832 is an abundant number, since it is smaller than the sum of its proper divisors (69567438686528).

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

51118707504832 is a wasteful number, since it uses less digits than its factorization.

51118707504832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455251 (or 455241 counting only the distinct ones).

The product of its (nonzero) digits is 1881600, while the sum is 52.

The spelling of 51118707504832 in words is "fifty-one trillion, one hundred eighteen billion, seven hundred seven million, five hundred four thousand, eight hundred thirty-two".