51111160115565 has 64 divisors (see below), whose sum is σ = 89842893742080. Its totient is φ = 24606197341440.

The previous prime is 51111160115557. The next prime is 51111160115597. The reversal of 51111160115565 is 56551106111115.

It is not a de Polignac number, because 51111160115565 - 2³ = 51111160115557 is a prime.

It is a super-2 number, since 2×51111160115565² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 36591742 + ... + 37962848.

It is an arithmetic number, because the mean of its divisors is an integer number (1403795214720).

Almost surely, 2^{51111160115565} is an apocalyptic number.

51111160115565 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

51111160115565 is a deficient number, since it is larger than the sum of its proper divisors (38731733626515).

51111160115565 is a wasteful number, since it uses less digits than its factorization.

51111160115565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1372722.

The product of its (nonzero) digits is 22500, while the sum is 39.

The spelling of 51111160115565 in words is "fifty-one trillion, one hundred eleven billion, one hundred sixty million, one hundred fifteen thousand, five hundred sixty-five".