320977133597 has 2 divisors, whose sum is σ = 320977133598. Its totient is φ = 320977133596.

The previous prime is 320977133563. The next prime is 320977133621. The reversal of 320977133597 is 795331779023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 317711468281 + 3265665316 = 563659^2 + 57146^2 .

It is a cyclic number.

It is not a de Polignac number, because 320977133597 - 2³⁴ = 303797264413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320977103597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160488566798 + 160488566799.

It is an arithmetic number, because the mean of its divisors is an integer number (160488566799).

Almost surely, 2^320977133597 is an apocalyptic number.

It is an amenable number.

320977133597 is a deficient number, since it is larger than the sum of its proper divisors (1).

320977133597 is an equidigital number, since it uses as much as digits as its factorization.

320977133597 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7501410, while the sum is 56.

The spelling of 320977133597 in words is "three hundred twenty billion, nine hundred seventy-seven million, one hundred thirty-three thousand, five hundred ninety-seven".