79902460997 has 2 divisors, whose sum is σ = 79902460998. Its totient is φ = 79902460996.

The previous prime is 79902460993. The next prime is 79902461069. The reversal of 79902460997 is 79906420997.

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., 71281524196 + 8620936801 = 266986^2 + 92849^2 .

It is a cyclic number.

It is not a de Polignac number, because 79902460997 - 2² = 79902460993 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79902460991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39951230498 + 39951230499.

It is an arithmetic number, because the mean of its divisors is an integer number (39951230499).

Almost surely, 2^79902460997 is an apocalyptic number.

It is an amenable number.

79902460997 is a deficient number, since it is larger than the sum of its proper divisors (1).

79902460997 is an equidigital number, since it uses as much as digits as its factorization.

79902460997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15431472, while the sum is 62.

The spelling of 79902460997 in words is "seventy-nine billion, nine hundred two million, four hundred sixty thousand, nine hundred ninety-seven".