79791414220816 has 45 divisors (see below), whose sum is σ = 155037338011101. Its totient is φ = 39782102252736.

The previous prime is 79791414220781. The next prime is 79791414220873. The reversal of 79791414220816 is 61802241419797.

The square root of 79791414220816 is 8932604.

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

It can be written as a sum of positive squares in only one way, i.e., 43371444490000 + 36419969730816 = 6585700^2 + 6034896^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 13327442175 + ... + 13327448161.

Almost surely, 2^{79791414220816} is an apocalyptic number.

79791414220816 is the 8932604-th square number.

It is an amenable number.

79791414220816 is a deficient number, since it is larger than the sum of its proper divisors (75245923790285).

79791414220816 is an frugal number, since it uses more digits than its factorization.

79791414220816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12728 (or 6362 counting only the distinct ones).

The product of its (nonzero) digits is 12192768, while the sum is 61.

The spelling of 79791414220816 in words is "seventy-nine trillion, seven hundred ninety-one billion, four hundred fourteen million, two hundred twenty thousand, eight hundred sixteen".