85994663855 has 16 divisors (see below), whose sum is σ = 104218358400. Its totient is φ = 68115510528.

The previous prime is 85994663801. The next prime is 85994663857. The reversal of 85994663855 is 55836649958.

It is a cyclic number.

It is not a de Polignac number, because 85994663855 - 2¹⁴ = 85994647471 is a prime.

It is a super-2 number, since 2×85994663855² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85994663857) 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, 48794 + ... + 417576.

It is an arithmetic number, because the mean of its divisors is an integer number (6513647400).

Almost surely, 2^85994663855 is an apocalyptic number.

85994663855 is a deficient number, since it is larger than the sum of its proper divisors (18223694545).

85994663855 is a wasteful number, since it uses less digits than its factorization.

85994663855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369250.

The product of its digits is 279936000, while the sum is 68.

The spelling of 85994663855 in words is "eighty-five billion, nine hundred ninety-four million, six hundred sixty-three thousand, eight hundred fifty-five".