51156665115 has 32 divisors (see below), whose sum is σ = 89653884480. Its totient is φ = 24793165824.

The previous prime is 51156665107. The next prime is 51156665213.

51156665115 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 51156665115 - 2³ = 51156665107 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3451474 + ... + 3466263.

It is an arithmetic number, because the mean of its divisors is an integer number (2801683890).

Almost surely, 2^51156665115 is an apocalyptic number.

51156665115 is a deficient number, since it is larger than the sum of its proper divisors (38497219365).

51156665115 is a wasteful number, since it uses less digits than its factorization.

51156665115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6917791.

The product of its digits is 135000, while the sum is 42.

The spelling of 51156665115 in words is "fifty-one billion, one hundred fifty-six million, six hundred sixty-five thousand, one hundred fifteen".