85611672719 has 16 divisors (see below), whose sum is σ = 87832509600. Its totient is φ = 83401629696.

The previous prime is 85611672703. The next prime is 85611672721. The reversal of 85611672719 is 91727611658.

It is a cyclic number.

It is not a de Polignac number, because 85611672719 - 2⁴ = 85611672703 is a prime.

It is a super-2 number, since 2×85611672719² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85611672779) by changing a digit.

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, 42955187 + ... + 42957179.

It is an arithmetic number, because the mean of its divisors is an integer number (5489531850).

Almost surely, 2^85611672719 is an apocalyptic number.

85611672719 is a deficient number, since it is larger than the sum of its proper divisors (2220836881).

85611672719 is a wasteful number, since it uses less digits than its factorization.

85611672719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4154.

The product of its digits is 1270080, while the sum is 53.

The spelling of 85611672719 in words is "eighty-five billion, six hundred eleven million, six hundred seventy-two thousand, seven hundred nineteen".