320977133567 has 4 divisors (see below), whose sum is σ = 320991244800. Its totient is φ = 320963022336.

The previous prime is 320977133563. The next prime is 320977133597. The reversal of 320977133567 is 765331779023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 765331779023 = 7 ⋅109333111289.

It is a cyclic number.

It is not a de Polignac number, because 320977133567 - 2² = 320977133563 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320977133563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7021442 + ... + 7067007.

It is an arithmetic number, because the mean of its divisors is an integer number (80247811200).

Almost surely, 2^320977133567 is an apocalyptic number.

320977133567 is a deficient number, since it is larger than the sum of its proper divisors (14111233).

320977133567 is a wasteful number, since it uses less digits than its factorization.

320977133567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14111232.

The product of its (nonzero) digits is 5000940, while the sum is 53.

The spelling of 320977133567 in words is "three hundred twenty billion, nine hundred seventy-seven million, one hundred thirty-three thousand, five hundred sixty-seven".