85811488517165 has 64 divisors (see below), whose sum is σ = 111521212508160. Its totient is φ = 63220036239360.

The previous prime is 85811488517149. The next prime is 85811488517191. The reversal of 85811488517165 is 56171588411858.

It is not a de Polignac number, because 85811488517165 - 2⁴ = 85811488517149 is a prime.

It is a super-2 number, since 2×85811488517165² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 85811488517095 and 85811488517104.

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, 751245137 + ... + 751359353.

It is an arithmetic number, because the mean of its divisors is an integer number (1742518945440).

Almost surely, 2^{85811488517165} is an apocalyptic number.

It is an amenable number.

85811488517165 is a deficient number, since it is larger than the sum of its proper divisors (25709723990995).

85811488517165 is a wasteful number, since it uses less digits than its factorization.

85811488517165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116382.

The product of its digits is 86016000, while the sum is 68.

The spelling of 85811488517165 in words is "eighty-five trillion, eight hundred eleven billion, four hundred eighty-eight million, five hundred seventeen thousand, one hundred sixty-five".