864493559285 has 16 divisors (see below), whose sum is σ = 1092035165760. Its totient is φ = 655169137920.

The previous prime is 864493559249. The next prime is 864493559311. The reversal of 864493559285 is 582955394468.

It is a happy number.

It is not a de Polignac number, because 864493559285 - 2²⁶ = 864426450421 is a prime.

It is a super-2 number, since 2×864493559285² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2424914 + ... + 2758476.

It is an arithmetic number, because the mean of its divisors is an integer number (68252197860).

Almost surely, 2^864493559285 is an apocalyptic number.

It is an amenable number.

864493559285 is a deficient number, since it is larger than the sum of its proper divisors (227541606475).

864493559285 is a wasteful number, since it uses less digits than its factorization.

864493559285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360868.

The product of its digits is 373248000, while the sum is 68.

The spelling of 864493559285 in words is "eight hundred sixty-four billion, four hundred ninety-three million, five hundred fifty-nine thousand, two hundred eighty-five".