51920534648 has 16 divisors (see below), whose sum is σ = 97575838080. Its totient is φ = 25900311168.

The previous prime is 51920534621. The next prime is 51920534657. The reversal of 51920534648 is 84643502915.

51920534648 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7490840 + ... + 7497767.

It is an arithmetic number, because the mean of its divisors is an integer number (6098489880).

Almost surely, 2^51920534648 is an apocalyptic number.

It is an amenable number.

51920534648 is a deficient number, since it is larger than the sum of its proper divisors (45655303432).

51920534648 is a wasteful number, since it uses less digits than its factorization.

51920534648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14989046 (or 14989042 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 47.

The spelling of 51920534648 in words is "fifty-one billion, nine hundred twenty million, five hundred thirty-four thousand, six hundred forty-eight".