51789421380 has 48 divisors (see below), whose sum is σ = 152642508480. Its totient is φ = 13083643008.

The previous prime is 51789421357. The next prime is 51789421429. The reversal of 51789421380 is 8312498715.

51789421380 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×51789421380² (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 15 ways as a sum of consecutive naturals, for example, 22713519 + ... + 22715798.

It is an arithmetic number, because the mean of its divisors is an integer number (3180052260).

Almost surely, 2^51789421380 is an apocalyptic number.

It is an amenable number.

51789421380 is an abundant number, since it is smaller than the sum of its proper divisors (100853087100).

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

51789421380 is a wasteful number, since it uses less digits than its factorization.

51789421380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45429348 (or 45429346 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 48.

The spelling of 51789421380 in words is "fifty-one billion, seven hundred eighty-nine million, four hundred twenty-one thousand, three hundred eighty".