79989513688453 has 4 divisors (see below), whose sum is σ = 80171722148320. Its totient is φ = 79807305228588.

The previous prime is 79989513688397. The next prime is 79989513688457. The reversal of 79989513688453 is 35488631598997.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 79989513688453 - 2¹⁷ = 79989513557381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79989513688457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91104229275 + ... + 91104230152.

It is an arithmetic number, because the mean of its divisors is an integer number (20042930537080).

Almost surely, 2^{79989513688453} is an apocalyptic number.

It is an amenable number.

79989513688453 is a deficient number, since it is larger than the sum of its proper divisors (182208459867).

79989513688453 is a wasteful number, since it uses less digits than its factorization.

79989513688453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182208459866.

The product of its digits is 14108774400, while the sum is 85.

The spelling of 79989513688453 in words is "seventy-nine trillion, nine hundred eighty-nine billion, five hundred thirteen million, six hundred eighty-eight thousand, four hundred fifty-three".