79402702669 has 2 divisors, whose sum is σ = 79402702670. Its totient is φ = 79402702668.

The previous prime is 79402702661. The next prime is 79402702693. The reversal of 79402702669 is 96620720497.

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., 79220857444 + 181845225 = 281462^2 + 13485^2 .

It is a cyclic number.

It is not a de Polignac number, because 79402702669 - 2³ = 79402702661 is a prime.

It is a super-2 number, since 2×79402702669² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79402702661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39701351334 + 39701351335.

It is an arithmetic number, because the mean of its divisors is an integer number (39701351335).

Almost surely, 2^79402702669 is an apocalyptic number.

It is an amenable number.

79402702669 is a deficient number, since it is larger than the sum of its proper divisors (1).

79402702669 is an equidigital number, since it uses as much as digits as its factorization.

79402702669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2286144, while the sum is 52.

The spelling of 79402702669 in words is "seventy-nine billion, four hundred two million, seven hundred two thousand, six hundred sixty-nine".