868321513320 has 64 divisors (see below), whose sum is σ = 2742067944000. Its totient is φ = 219365434368.

The previous prime is 868321513291. The next prime is 868321513331. The reversal of 868321513320 is 23315123868.

It is a happy 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, 190419105 + ... + 190423664.

It is an arithmetic number, because the mean of its divisors is an integer number (42844811625).

Almost surely, 2^868321513320 is an apocalyptic number.

It is an amenable number.

868321513320 is an abundant number, since it is smaller than the sum of its proper divisors (1873746430680).

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

868321513320 is a wasteful number, since it uses less digits than its factorization.

868321513320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380842802 (or 380842798 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

It can be divided in two parts, 8683215 and 13320, that added together give a triangular number (8696535 = T₄₁₇₀).

The spelling of 868321513320 in words is "eight hundred sixty-eight billion, three hundred twenty-one million, five hundred thirteen thousand, three hundred twenty".