864379546538 has 8 divisors (see below), whose sum is σ = 1314330543588. Its totient is φ = 426269365344.

The previous prime is 864379546529. The next prime is 864379546559. The reversal of 864379546538 is 835645973468.

It can be written as a sum of positive squares in 2 ways, for example, as 807936715609 + 56442830929 = 898853^2 + 237577^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-4 number, since 4×864379546538⁴ (a number of 49 digits) contains 4444 as substring.

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, 2960203781 + ... + 2960204072.

Almost surely, 2^864379546538 is an apocalyptic number.

864379546538 is a deficient number, since it is larger than the sum of its proper divisors (449950997050).

864379546538 is a wasteful number, since it uses less digits than its factorization.

864379546538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5920407928.

The product of its digits is 522547200, while the sum is 68.

The spelling of 864379546538 in words is "eight hundred sixty-four billion, three hundred seventy-nine million, five hundred forty-six thousand, five hundred thirty-eight".