79779802798063 has 2 divisors, whose sum is σ = 79779802798064. Its totient is φ = 79779802798062.

The previous prime is 79779802798057. The next prime is 79779802798093. The reversal of 79779802798063 is 36089720897797.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 79779802798063 - 2²¹ = 79779800700911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79779802798013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39889901399031 + 39889901399032.

It is an arithmetic number, because the mean of its divisors is an integer number (39889901399032).

Almost surely, 2^{79779802798063} is an apocalyptic number.

79779802798063 is a deficient number, since it is larger than the sum of its proper divisors (1).

79779802798063 is an equidigital number, since it uses as much as digits as its factorization.

79779802798063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032758016, while the sum is 82.

The spelling of 79779802798063 in words is "seventy-nine trillion, seven hundred seventy-nine billion, eight hundred two million, seven hundred ninety-eight thousand, sixty-three".