51191208096 has 96 divisors (see below), whose sum is σ = 153651552768. Its totient is φ = 14618638080.

The previous prime is 51191208017. The next prime is 51191208139. The reversal of 51191208096 is 69080219115.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 1381491 + ... + 1418061.

It is an arithmetic number, because the mean of its divisors is an integer number (1600537008).

Almost surely, 2^51191208096 is an apocalyptic number.

51191208096 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

51191208096 is an abundant number, since it is smaller than the sum of its proper divisors (102460344672).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51191208096 is a wasteful number, since it uses less digits than its factorization.

51191208096 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38674 (or 38666 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 42.

The spelling of 51191208096 in words is "fifty-one billion, one hundred ninety-one million, two hundred eight thousand, ninety-six".