79520795639 has 2 divisors, whose sum is σ = 79520795640. Its totient is φ = 79520795638.

The previous prime is 79520795633. The next prime is 79520795657. The reversal of 79520795639 is 93659702597.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 79520795639 - 2⁴ = 79520795623 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79520795633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39760397819 + 39760397820.

It is an arithmetic number, because the mean of its divisors is an integer number (39760397820).

Almost surely, 2^79520795639 is an apocalyptic number.

79520795639 is a deficient number, since it is larger than the sum of its proper divisors (1).

79520795639 is an equidigital number, since it uses as much as digits as its factorization.

79520795639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32148900, while the sum is 62.

The spelling of 79520795639 in words is "seventy-nine billion, five hundred twenty million, seven hundred ninety-five thousand, six hundred thirty-nine".