79669368799 has 2 divisors, whose sum is σ = 79669368800. Its totient is φ = 79669368798.

The previous prime is 79669368797. The next prime is 79669368811. The reversal of 79669368799 is 99786396697.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 79669368799 - 2¹ = 79669368797 is a prime.

Together with 79669368797, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79669368797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39834684399 + 39834684400.

It is an arithmetic number, because the mean of its divisors is an integer number (39834684400).

Almost surely, 2^79669368799 is an apocalyptic number.

79669368799 is a deficient number, since it is larger than the sum of its proper divisors (1).

79669368799 is an equidigital number, since it uses as much as digits as its factorization.

79669368799 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1666598976, while the sum is 79.

The spelling of 79669368799 in words is "seventy-nine billion, six hundred sixty-nine million, three hundred sixty-eight thousand, seven hundred ninety-nine".