51020928572 has 12 divisors (see below), whose sum is σ = 91464347856. Its totient is φ = 24888257760.

The previous prime is 51020928571. The next prime is 51020928587. The reversal of 51020928572 is 27582902015.

51020928572 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51020928571) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155551448 + ... + 155551775.

It is an arithmetic number, because the mean of its divisors is an integer number (7622028988).

Almost surely, 2^51020928572 is an apocalyptic number.

It is an amenable number.

51020928572 is a deficient number, since it is larger than the sum of its proper divisors (40443419284).

51020928572 is a wasteful number, since it uses less digits than its factorization.

51020928572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311103268 (or 311103266 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 41.

The spelling of 51020928572 in words is "fifty-one billion, twenty million, nine hundred twenty-eight thousand, five hundred seventy-two".