51605783115 has 16 divisors (see below), whose sum is σ = 84800855328. Its totient is φ = 26779216896.

The previous prime is 51605783087. The next prime is 51605783137. The reversal of 51605783115 is 51138750615.

It is a happy number.

It is not a de Polignac number, because 51605783115 - 2⁸ = 51605782859 is a prime.

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, 46491142 + ... + 46492251.

It is an arithmetic number, because the mean of its divisors is an integer number (5300053458).

Almost surely, 2^51605783115 is an apocalyptic number.

51605783115 is a deficient number, since it is larger than the sum of its proper divisors (33195072213).

51605783115 is a wasteful number, since it uses less digits than its factorization.

51605783115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92983438.

The product of its (nonzero) digits is 126000, while the sum is 42.

The spelling of 51605783115 in words is "fifty-one billion, six hundred five million, seven hundred eighty-three thousand, one hundred fifteen".