2163797861597 has 2 divisors, whose sum is σ = 2163797861598. Its totient is φ = 2163797861596.

The previous prime is 2163797861509. The next prime is 2163797861657. The reversal of 2163797861597 is 7951687973612.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2001690165721 + 162107695876 = 1414811^2 + 402626^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2163797861597 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2163797861597.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2163797861507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1081898930798 + 1081898930799.

It is an arithmetic number, because the mean of its divisors is an integer number (1081898930799).

Almost surely, 2^{2163797861597} is an apocalyptic number.

It is an amenable number.

2163797861597 is a deficient number, since it is larger than the sum of its proper divisors (1).

2163797861597 is an equidigital number, since it uses as much as digits as its factorization.

2163797861597 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 240045120, while the sum is 71.

The spelling of 2163797861597 in words is "two trillion, one hundred sixty-three billion, seven hundred ninety-seven million, eight hundred sixty-one thousand, five hundred ninety-seven".