79144894492 has 6 divisors (see below), whose sum is σ = 138503565368. Its totient is φ = 39572447244.

The previous prime is 79144894483. The next prime is 79144894513. The reversal of 79144894492 is 29449844197.

It is a self number, because there is not a number n which added to its sum of digits gives 79144894492.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9893111808 + ... + 9893111815.

Almost surely, 2^79144894492 is an apocalyptic number.

It is an amenable number.

79144894492 is a deficient number, since it is larger than the sum of its proper divisors (59358670876).

79144894492 is a wasteful number, since it uses less digits than its factorization.

79144894492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19786223627 (or 19786223625 counting only the distinct ones).

The product of its digits is 20901888, while the sum is 61.

The spelling of 79144894492 in words is "seventy-nine billion, one hundred forty-four million, eight hundred ninety-four thousand, four hundred ninety-two".