85311595635 has 128 divisors (see below), whose sum is σ = 167870361600. Its totient is φ = 36109172736.

The previous prime is 85311595631. The next prime is 85311595673. The reversal of 85311595635 is 53659511358.

It is a happy number.

It is not a de Polignac number, because 85311595635 - 2² = 85311595631 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (85311595631) 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 127 ways as a sum of consecutive naturals, for example, 78052149 + ... + 78053241.

It is an arithmetic number, because the mean of its divisors is an integer number (1311487200).

Almost surely, 2^85311595635 is an apocalyptic number.

85311595635 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

85311595635 is a deficient number, since it is larger than the sum of its proper divisors (82558765965).

85311595635 is a wasteful number, since it uses less digits than its factorization.

85311595635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1797.

The product of its digits is 2430000, while the sum is 51.

The spelling of 85311595635 in words is "eighty-five billion, three hundred eleven million, five hundred ninety-five thousand, six hundred thirty-five".