51611155111615 has 16 divisors (see below), whose sum is σ = 67564113376896. Its totient is φ = 37535152528800.

The previous prime is 51611155111603. The next prime is 51611155111627.

51611155111615 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (51611155111603) and next prime (51611155111627).

It is not a de Polignac number, because 51611155111615 - 2²³ = 51611146723007 is a prime.

It is a super-2 number, since 2×51611155111615² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

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, 6289924 + ... + 11949286.

It is an arithmetic number, because the mean of its divisors is an integer number (4222757086056).

Almost surely, 2^{51611155111615} is an apocalyptic number.

51611155111615 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51611155111615 is a deficient number, since it is larger than the sum of its proper divisors (15952958265281).

51611155111615 is a wasteful number, since it uses less digits than its factorization.

51611155111615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5825190.

The product of its digits is 22500, while the sum is 40.

The spelling of 51611155111615 in words is "fifty-one trillion, six hundred eleven billion, one hundred fifty-five million, one hundred eleven thousand, six hundred fifteen".