51837748980 has 24 divisors (see below), whose sum is σ = 145145697312. Its totient is φ = 13823399712.

The previous prime is 51837748969. The next prime is 51837748993. The reversal of 51837748980 is 8984773815.

It is a Harshad number since it is a multiple of its sum of digits (60), and also a Moran number because the ratio is a prime number: 863962483 = 51837748980 / (5 + 1 + 8 + 3 + 7 + 7 + 4 + 8 + 9 + 8 + 0).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 431981182 + ... + 431981301.

It is an arithmetic number, because the mean of its divisors is an integer number (6047737388).

Almost surely, 2^51837748980 is an apocalyptic number.

It is an amenable number.

51837748980 is an abundant number, since it is smaller than the sum of its proper divisors (93307948332).

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

51837748980 is a wasteful number, since it uses less digits than its factorization.

51837748980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 863962495 (or 863962493 counting only the distinct ones).

The product of its (nonzero) digits is 13547520, while the sum is 60.

The spelling of 51837748980 in words is "fifty-one billion, eight hundred thirty-seven million, seven hundred forty-eight thousand, nine hundred eighty".