51213603115 has 16 divisors (see below), whose sum is σ = 61677547776. Its totient is φ = 40823503200.

The previous prime is 51213603047. The next prime is 51213603137. The reversal of 51213603115 is 51130631215.

51213603115 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 51213603115 - 2⁷ = 51213602987 is a prime.

It is a Duffinian number.

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, 5735044 + ... + 5743966.

It is an arithmetic number, because the mean of its divisors is an integer number (3854846736).

Almost surely, 2^51213603115 is an apocalyptic number.

51213603115 is a deficient number, since it is larger than the sum of its proper divisors (10463944661).

51213603115 is a wasteful number, since it uses less digits than its factorization.

51213603115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12930.

The product of its (nonzero) digits is 2700, while the sum is 28.

The spelling of 51213603115 in words is "fifty-one billion, two hundred thirteen million, six hundred three thousand, one hundred fifteen".