79571716408804 has 27 divisors (see below), whose sum is σ = 141241650393571. Its totient is φ = 39224869583480.

The previous prime is 79571716408801. The next prime is 79571716408841. The reversal of 79571716408804 is 40880461717597.

The square root of 79571716408804 is 8920298.

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 79571716408804.

It is not an unprimeable number, because it can be changed into a prime (79571716408801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1266650907 + ... + 1266713725.

Almost surely, 2^{79571716408804} is an apocalyptic number.

79571716408804 is the 8920298-th square number.

It is an amenable number.

79571716408804 is a deficient number, since it is larger than the sum of its proper divisors (61669933984767).

79571716408804 is an frugal number, since it uses more digits than its factorization.

79571716408804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125784 (or 62892 counting only the distinct ones).

The product of its (nonzero) digits is 94832640, while the sum is 67.

The spelling of 79571716408804 in words is "seventy-nine trillion, five hundred seventy-one billion, seven hundred sixteen million, four hundred eight thousand, eight hundred four".