51311200772 has 48 divisors (see below), whose sum is σ = 99054009600. Its totient is φ = 23109069312.

The previous prime is 51311200727. The next prime is 51311200813. The reversal of 51311200772 is 27700211315.

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, 792479 + ... + 854777.

It is an arithmetic number, because the mean of its divisors is an integer number (2063625200).

Almost surely, 2^51311200772 is an apocalyptic number.

51311200772 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

51311200772 is a deficient number, since it is larger than the sum of its proper divisors (47742808828).

51311200772 is a wasteful number, since it uses less digits than its factorization.

51311200772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62700 (or 62698 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 29.

The spelling of 51311200772 in words is "fifty-one billion, three hundred eleven million, two hundred thousand, seven hundred seventy-two".