864638949836468 has 24 divisors (see below), whose sum is σ = 1513243535739264. Its totient is φ = 432283655148800.

The previous prime is 864638949836429. The next prime is 864638949836507.

864638949836468 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (864638949836429) and next prime (864638949836507).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3632344613 + ... + 3632582643.

It is an arithmetic number, because the mean of its divisors is an integer number (63051813989136).

Almost surely, 2^{864638949836468} is an apocalyptic number.

It is an amenable number.

864638949836468 is a deficient number, since it is larger than the sum of its proper divisors (648604585902796).

864638949836468 is a wasteful number, since it uses less digits than its factorization.

864638949836468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309463 (or 309461 counting only the distinct ones).

The product of its digits is 247669456896, while the sum is 92.

The spelling of 864638949836468 in words is "eight hundred sixty-four trillion, six hundred thirty-eight billion, nine hundred forty-nine million, eight hundred thirty-six thousand, four hundred sixty-eight".