7979662439493 has 8 divisors (see below), whose sum is σ = 10639640445408. Its totient is φ = 5319729696624.

The previous prime is 7979662439491. The next prime is 7979662439509. The reversal of 7979662439493 is 3949342669797.

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

It is not a de Polignac number, because 7979662439493 - 2¹ = 7979662439491 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7979662439491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10902246 + ... + 11611127.

It is an arithmetic number, because the mean of its divisors is an integer number (1329955055676).

Almost surely, 2^{7979662439493} is an apocalyptic number.

It is an amenable number.

7979662439493 is a deficient number, since it is larger than the sum of its proper divisors (2659978005915).

7979662439493 is a wasteful number, since it uses less digits than its factorization.

7979662439493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22631523.

The product of its digits is 3333197952, while the sum is 78.

The spelling of 7979662439493 in words is "seven trillion, nine hundred seventy-nine billion, six hundred sixty-two million, four hundred thirty-nine thousand, four hundred ninety-three".