51115016015 has 16 divisors (see below), whose sum is σ = 70122272832. Its totient is φ = 35039457024.

The previous prime is 51115015997. The next prime is 51115016053. The reversal of 51115016015 is 51061051115.

It is a cyclic number.

It is not a de Polignac number, because 51115016015 - 2⁸ = 51115015759 is a prime.

It is a super-2 number, since 2×51115016015² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110204 + ... + 338193.

It is an arithmetic number, because the mean of its divisors is an integer number (4382642052).

Almost surely, 2^51115016015 is an apocalyptic number.

51115016015 is a deficient number, since it is larger than the sum of its proper divisors (19007256817).

51115016015 is a wasteful number, since it uses less digits than its factorization.

51115016015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451666.

The product of its (nonzero) digits is 750, while the sum is 26.

The spelling of 51115016015 in words is "fifty-one billion, one hundred fifteen million, sixteen thousand, fifteen".