51429728132 has 12 divisors (see below), whose sum is σ = 90023386320. Its totient is φ = 25708760616.

The previous prime is 51429728123. The next prime is 51429728153. The reversal of 51429728132 is 23182792415.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

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, 1506878 + ... + 1540629.

It is an arithmetic number, because the mean of its divisors is an integer number (7501948860).

Almost surely, 2^51429728132 is an apocalyptic number.

It is an amenable number.

51429728132 is a deficient number, since it is larger than the sum of its proper divisors (38593658188).

51429728132 is a wasteful number, since it uses less digits than its factorization.

51429728132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3051730 (or 3051728 counting only the distinct ones).

The product of its digits is 241920, while the sum is 44.

The spelling of 51429728132 in words is "fifty-one billion, four hundred twenty-nine million, seven hundred twenty-eight thousand, one hundred thirty-two".