51113798560 has 96 divisors (see below), whose sum is σ = 131891457600. Its totient is φ = 18564648960.

The previous prime is 51113798551. The next prime is 51113798573. The reversal of 51113798560 is 6589731115.

It is a super-2 number, since 2×51113798560² (a number of 22 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 51113798560.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1494936 + ... + 1528744.

It is an arithmetic number, because the mean of its divisors is an integer number (1373869350).

Almost surely, 2^51113798560 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 51113798560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65945728800).

51113798560 is an abundant number, since it is smaller than the sum of its proper divisors (80777659040).

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

51113798560 is a wasteful number, since it uses less digits than its factorization.

51113798560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34694 (or 34686 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 46.

The spelling of 51113798560 in words is "fifty-one billion, one hundred thirteen million, seven hundred ninety-eight thousand, five hundred sixty".