51665001111015 has 16 divisors (see below), whose sum is σ = 85330582480896. Its totient is φ = 26665807024800.

The previous prime is 51665001110981. The next prime is 51665001111043. The reversal of 51665001111015 is 51011110056615.

It is not a de Polignac number, because 51665001111015 - 2⁷ = 51665001110887 is a prime.

It is a congruent 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, 55553764171 + ... + 55553765100.

It is an arithmetic number, because the mean of its divisors is an integer number (5333161405056).

Almost surely, 2^{51665001111015} is an apocalyptic number.

51665001111015 is a deficient number, since it is larger than the sum of its proper divisors (33665581369881).

51665001111015 is a wasteful number, since it uses less digits than its factorization.

51665001111015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111107529310.

The product of its (nonzero) digits is 4500, while the sum is 33.

The spelling of 51665001111015 in words is "fifty-one trillion, six hundred sixty-five billion, one million, one hundred eleven thousand, fifteen".