85663405623 has 16 divisors (see below), whose sum is σ = 117426298880. Its totient is φ = 55507921056.

The previous prime is 85663405609. The next prime is 85663405627. The reversal of 85663405623 is 32650436658.

It is not a de Polignac number, because 85663405623 - 2⁵ = 85663405591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85663405627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 291703 + ... + 506376.

It is an arithmetic number, because the mean of its divisors is an integer number (7339143680).

Almost surely, 2^85663405623 is an apocalyptic number.

85663405623 is a deficient number, since it is larger than the sum of its proper divisors (31762893257).

85663405623 is a wasteful number, since it uses less digits than its factorization.

85663405623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 799086.

The product of its (nonzero) digits is 3110400, while the sum is 48.

The spelling of 85663405623 in words is "eighty-five billion, six hundred sixty-three million, four hundred five thousand, six hundred twenty-three".