51289011995 has 32 divisors (see below), whose sum is σ = 66674409984. Its totient is φ = 37650816000.

The previous prime is 51289011979. The next prime is 51289012007. The reversal of 51289011995 is 59911098215.

51289011995 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51289011995 - 2⁴ = 51289011979 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10614230 + ... + 10619060.

It is an arithmetic number, because the mean of its divisors is an integer number (2083575312).

Almost surely, 2^51289011995 is an apocalyptic number.

51289011995 is a deficient number, since it is larger than the sum of its proper divisors (15385397989).

51289011995 is a wasteful number, since it uses less digits than its factorization.

51289011995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5783.

The product of its (nonzero) digits is 291600, while the sum is 50.

The spelling of 51289011995 in words is "fifty-one billion, two hundred eighty-nine million, eleven thousand, nine hundred ninety-five".