51831353760 has 384 divisors, whose sum is σ = 178648436736. Its totient is φ = 12593602560.

The previous prime is 51831353731. The next prime is 51831353779. The reversal of 51831353760 is 6735313815.

It is a super-2 number, since 2×51831353760² (a number of 22 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, 19462189 + ... + 19464851.

It is an arithmetic number, because the mean of its divisors is an integer number (465230304).

Almost surely, 2^51831353760 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 51831353760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89324218368).

51831353760 is an abundant number, since it is smaller than the sum of its proper divisors (126817082976).

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

51831353760 is a wasteful number, since it uses less digits than its factorization.

51831353760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2788 (or 2780 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 42.

The spelling of 51831353760 in words is "fifty-one billion, eight hundred thirty-one million, three hundred fifty-three thousand, seven hundred sixty".