864772139694 has 64 divisors (see below), whose sum is σ = 1817037987840. Its totient is φ = 274017600000.

The previous prime is 864772139683. The next prime is 864772139701. The reversal of 864772139694 is 496931277468.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8470102 + ... + 8571590.

It is an arithmetic number, because the mean of its divisors is an integer number (28391218560).

Almost surely, 2^864772139694 is an apocalyptic number.

864772139694 is an abundant number, since it is smaller than the sum of its proper divisors (952265848146).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

864772139694 is a wasteful number, since it uses less digits than its factorization.

864772139694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102337.

The product of its digits is 109734912, while the sum is 66.

The spelling of 864772139694 in words is "eight hundred sixty-four billion, seven hundred seventy-two million, one hundred thirty-nine thousand, six hundred ninety-four".