79871803456 has 21 divisors (see below), whose sum is σ = 158500096639. Its totient is φ = 39934771264.

The previous prime is 79871803441. The next prime is 79871803457. The reversal of 79871803456 is 65430817897.

The square root of 79871803456 is 282616.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 79871803456.

It is not an unprimeable number, because it can be changed into a prime (79871803457) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2243265 + ... + 2278591.

Almost surely, 2^79871803456 is an apocalyptic number.

79871803456 is the 282616-th square number.

It is an amenable number.

79871803456 is a deficient number, since it is larger than the sum of its proper divisors (78628293183).

79871803456 is an frugal number, since it uses more digits than its factorization.

79871803456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70666 (or 35329 counting only the distinct ones).

The product of its (nonzero) digits is 10160640, while the sum is 58.

The spelling of 79871803456 in words is "seventy-nine billion, eight hundred seventy-one million, eight hundred three thousand, four hundred fifty-six".