79446209305 has 4 divisors (see below), whose sum is σ = 95335451172. Its totient is φ = 63556967440.

The previous prime is 79446209267. The next prime is 79446209347. The reversal of 79446209305 is 50390264497.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50390264497 = 379 ⋅132955843.

It can be written as a sum of positive squares in 2 ways, for example, as 62366071824 + 17080137481 = 249732^2 + 130691^2 .

It is not a de Polignac number, because 79446209305 - 2⁷ = 79446209177 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7944620926 + ... + 7944620935.

It is an arithmetic number, because the mean of its divisors is an integer number (23833862793).

Almost surely, 2^79446209305 is an apocalyptic number.

It is an amenable number.

79446209305 is a deficient number, since it is larger than the sum of its proper divisors (15889241867).

79446209305 is a wasteful number, since it uses less digits than its factorization.

79446209305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15889241866.

The product of its (nonzero) digits is 1632960, while the sum is 49.

The spelling of 79446209305 in words is "seventy-nine billion, four hundred forty-six million, two hundred nine thousand, three hundred five".