79504261493 has 2 divisors, whose sum is σ = 79504261494. Its totient is φ = 79504261492.

The previous prime is 79504261469. The next prime is 79504261519. The reversal of 79504261493 is 39416240597.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69948612484 + 9555649009 = 264478^2 + 97753^2 .

It is an emirp because it is prime and its reverse (39416240597) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79504261493 - 2¹⁰ = 79504260469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79504261433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39752130746 + 39752130747.

It is an arithmetic number, because the mean of its divisors is an integer number (39752130747).

Almost surely, 2^79504261493 is an apocalyptic number.

It is an amenable number.

79504261493 is a deficient number, since it is larger than the sum of its proper divisors (1).

79504261493 is an equidigital number, since it uses as much as digits as its factorization.

79504261493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1632960, while the sum is 50.

The spelling of 79504261493 in words is "seventy-nine billion, five hundred four million, two hundred sixty-one thousand, four hundred ninety-three".