79436503793 has 2 divisors, whose sum is σ = 79436503794. Its totient is φ = 79436503792.

The previous prime is 79436503781. The next prime is 79436503807. The reversal of 79436503793 is 39730563497.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56269532944 + 23166970849 = 237212^2 + 152207^2 .

It is an emirp because it is prime and its reverse (39730563497) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79436503793 - 2³² = 75141536497 is a prime.

It is not a weakly prime, because it can be changed into another prime (79436503703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39718251896 + 39718251897.

It is an arithmetic number, because the mean of its divisors is an integer number (39718251897).

Almost surely, 2^79436503793 is an apocalyptic number.

It is an amenable number.

79436503793 is a deficient number, since it is larger than the sum of its proper divisors (1).

79436503793 is an equidigital number, since it uses as much as digits as its factorization.

79436503793 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12859560, while the sum is 56.

The spelling of 79436503793 in words is "seventy-nine billion, four hundred thirty-six million, five hundred three thousand, seven hundred ninety-three".