79857545945 has 8 divisors (see below), whose sum is σ = 99995535936. Its totient is φ = 61108382896.

The previous prime is 79857545879. The next prime is 79857545969. The reversal of 79857545945 is 54954575897.

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 79857545945 - 2¹² = 79857541849 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 347206607 + ... + 347206836.

It is an arithmetic number, because the mean of its divisors is an integer number (12499441992).

Almost surely, 2^79857545945 is an apocalyptic number.

It is an amenable number.

79857545945 is a deficient number, since it is larger than the sum of its proper divisors (20137989991).

79857545945 is a wasteful number, since it uses less digits than its factorization.

79857545945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694413471.

The product of its digits is 317520000, while the sum is 68.

The spelling of 79857545945 in words is "seventy-nine billion, eight hundred fifty-seven million, five hundred forty-five thousand, nine hundred forty-five".