79912391493 has 8 divisors (see below), whose sum is σ = 116236205856. Its totient is φ = 48431752400.

The previous prime is 79912391477. The next prime is 79912391513. The reversal of 79912391493 is 39419321997.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 79912391493 - 2⁴ = 79912391477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79912391473) 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 in 7 ways as a sum of consecutive naturals, for example, 1210793778 + ... + 1210793843.

It is an arithmetic number, because the mean of its divisors is an integer number (14529525732).

Almost surely, 2^79912391493 is an apocalyptic number.

It is an amenable number.

79912391493 is a deficient number, since it is larger than the sum of its proper divisors (36323814363).

79912391493 is a wasteful number, since it uses less digits than its factorization.

79912391493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2421587635.

The product of its digits is 3306744, while the sum is 57.

The spelling of 79912391493 in words is "seventy-nine billion, nine hundred twelve million, three hundred ninety-one thousand, four hundred ninety-three".