51800031360 has 1280 divisors, whose sum is σ = 243127526400. Its totient is φ = 10182205440.

The previous prime is 51800031331. The next prime is 51800031421. The reversal of 51800031360 is 6313000815.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 75841579 + ... + 75842261.

It is an arithmetic number, because the mean of its divisors is an integer number (189943380).

Almost surely, 2^51800031360 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 51800031360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121563763200).

51800031360 is an abundant number, since it is smaller than the sum of its proper divisors (191327495040).

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

51800031360 is a wasteful number, since it uses less digits than its factorization.

51800031360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751 (or 730 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The spelling of 51800031360 in words is "fifty-one billion, eight hundred million, thirty-one thousand, three hundred sixty".