51328511135656 has 16 divisors (see below), whose sum is σ = 96277152837600. Its totient is φ = 25654603712304.

The previous prime is 51328511135647. The next prime is 51328511135663. The reversal of 51328511135656 is 65653111582315.

It is a happy 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, 1206459340 + ... + 1206501883.

It is an arithmetic number, because the mean of its divisors is an integer number (6017322052350).

Almost surely, 2^{51328511135656} is an apocalyptic number.

It is an amenable number.

51328511135656 is a deficient number, since it is larger than the sum of its proper divisors (44948641701944).

51328511135656 is a wasteful number, since it uses less digits than its factorization.

51328511135656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2412963888 (or 2412963884 counting only the distinct ones).

The product of its digits is 3240000, while the sum is 52.

The spelling of 51328511135656 in words is "fifty-one trillion, three hundred twenty-eight billion, five hundred eleven million, one hundred thirty-five thousand, six hundred fifty-six".