320077086564 has 96 divisors (see below), whose sum is σ = 806457093120. Its totient is φ = 98501977728.

The previous prime is 320077086529. The next prime is 320077086599. The reversal of 320077086564 is 465680770023.

It is an interprime number because it is at equal distance from previous prime (320077086529) and next prime (320077086599).

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, 37798659 + ... + 37807125.

It is an arithmetic number, because the mean of its divisors is an integer number (8400594720).

Almost surely, 2^320077086564 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 320077086564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (403228546560).

320077086564 is an abundant number, since it is smaller than the sum of its proper divisors (486380006556).

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

320077086564 is a wasteful number, since it uses less digits than its factorization.

320077086564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13249 (or 13247 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 48.

The spelling of 320077086564 in words is "three hundred twenty billion, seventy-seven million, eighty-six thousand, five hundred sixty-four".