797590193938501 has 2 divisors, whose sum is σ = 797590193938502. Its totient is φ = 797590193938500.

The previous prime is 797590193938453. The next prime is 797590193938561. The reversal of 797590193938501 is 105839391095797.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 666881506754401 + 130708687184100 = 25824049^2 + 11432790^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-797590193938501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (797590193938561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 398795096969250 + 398795096969251.

It is an arithmetic number, because the mean of its divisors is an integer number (398795096969251).

Almost surely, 2^{797590193938501} is an apocalyptic number.

It is an amenable number.

797590193938501 is a deficient number, since it is larger than the sum of its proper divisors (1).

797590193938501 is an equidigital number, since it uses as much as digits as its factorization.

797590193938501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 578680200, while the sum is 76.

The spelling of 797590193938501 in words is "seven hundred ninety-seven trillion, five hundred ninety billion, one hundred ninety-three million, nine hundred thirty-eight thousand, five hundred one".