864197530864 has 20 divisors (see below), whose sum is σ = 1675559417056. Its totient is φ = 431795100672.

The previous prime is 864197530813. The next prime is 864197530873. The reversal of 864197530864 is 468035791468.

It is a happy number.

864197530864 is a modest number, since divided by 197530864 gives 864 as remainder.

It is a congruent 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, 18955569 + ... + 19001104.

Almost surely, 2^864197530864 is an apocalyptic number.

It is an amenable number.

864197530864 is a deficient number, since it is larger than the sum of its proper divisors (811361886192).

864197530864 is a wasteful number, since it uses less digits than its factorization.

864197530864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37958104 (or 37958098 counting only the distinct ones).

The product of its (nonzero) digits is 34836480, while the sum is 61.

The spelling of 864197530864 in words is "eight hundred sixty-four billion, one hundred ninety-seven million, five hundred thirty thousand, eight hundred sixty-four".