79438444253 has 4 divisors (see below), whose sum is σ = 90786793440. Its totient is φ = 68090095068.

The previous prime is 79438444249. The next prime is 79438444259. The reversal of 79438444253 is 35244483497.

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 79438444253 - 2² = 79438444249 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 79438444195 and 79438444204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79438444259) 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, 5674174583 + ... + 5674174596.

It is an arithmetic number, because the mean of its divisors is an integer number (22696698360).

Almost surely, 2^79438444253 is an apocalyptic number.

It is an amenable number.

79438444253 is a deficient number, since it is larger than the sum of its proper divisors (11348349187).

79438444253 is a wasteful number, since it uses less digits than its factorization.

79438444253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11348349186.

The product of its digits is 11612160, while the sum is 53.

The spelling of 79438444253 in words is "seventy-nine billion, four hundred thirty-eight million, four hundred forty-four thousand, two hundred fifty-three".