79516580945 has 8 divisors (see below), whose sum is σ = 95434992744. Its totient is φ = 63603201024.

The previous prime is 79516580903. The next prime is 79516581013. The reversal of 79516580945 is 54908561597.

It can be written as a sum of positive squares in 4 ways, for example, as 6242422081 + 73274158864 = 79009^2 + 270692^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 79516580945 - 2¹⁰ = 79516579921 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1223114 + ... + 1286483.

It is an arithmetic number, because the mean of its divisors is an integer number (11929374093).

Almost surely, 2^79516580945 is an apocalyptic number.

It is an amenable number.

79516580945 is a deficient number, since it is larger than the sum of its proper divisors (15918411799).

79516580945 is a wasteful number, since it uses less digits than its factorization.

79516580945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2515939.

The product of its (nonzero) digits is 13608000, while the sum is 59.

The spelling of 79516580945 in words is "seventy-nine billion, five hundred sixteen million, five hundred eighty thousand, nine hundred forty-five".