79902461069 has 2 divisors, whose sum is σ = 79902461070. Its totient is φ = 79902461068.

The previous prime is 79902460997. The next prime is 79902461131. The reversal of 79902461069 is 96016420997.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79207347844 + 695113225 = 281438^2 + 26365^2 .

It is a cyclic number.

It is not a de Polignac number, because 79902461069 - 2²⁴ = 79885683853 is a prime.

It is a super-2 number, since 2×79902461069² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 79902461069.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79902421069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39951230534 + 39951230535.

It is an arithmetic number, because the mean of its divisors is an integer number (39951230535).

Almost surely, 2^79902461069 is an apocalyptic number.

It is an amenable number.

79902461069 is a deficient number, since it is larger than the sum of its proper divisors (1).

79902461069 is an equidigital number, since it uses as much as digits as its factorization.

79902461069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1469664, while the sum is 53.

The spelling of 79902461069 in words is "seventy-nine billion, nine hundred two million, four hundred sixty-one thousand, sixty-nine".