85804640268635 has 4 divisors (see below), whose sum is σ = 102965568322368. Its totient is φ = 68643712214904.

The previous prime is 85804640268587. The next prime is 85804640268643. The reversal of 85804640268635 is 53686204640858.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 85804640268635 - 2⁸ = 85804640268379 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8580464026859 + ... + 8580464026868.

It is an arithmetic number, because the mean of its divisors is an integer number (25741392080592).

Almost surely, 2^{85804640268635} is an apocalyptic number.

85804640268635 is a deficient number, since it is larger than the sum of its proper divisors (17160928053733).

85804640268635 is a wasteful number, since it uses less digits than its factorization.

85804640268635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17160928053732.

The product of its (nonzero) digits is 265420800, while the sum is 65.

The spelling of 85804640268635 in words is "eighty-five trillion, eight hundred four billion, six hundred forty million, two hundred sixty-eight thousand, six hundred thirty-five".