79819145548 has 48 divisors (see below), whose sum is σ = 148609944000. Its totient is φ = 37457925120.

The previous prime is 79819145537. The next prime is 79819145579. The reversal of 79819145548 is 84554191897.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 466153 + ... + 613951.

It is an arithmetic number, because the mean of its divisors is an integer number (3096040500).

Almost surely, 2^79819145548 is an apocalyptic number.

It is an amenable number.

79819145548 is a deficient number, since it is larger than the sum of its proper divisors (68790798452).

79819145548 is a wasteful number, since it uses less digits than its factorization.

79819145548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147970 (or 147968 counting only the distinct ones).

The product of its digits is 14515200, while the sum is 61.

The spelling of 79819145548 in words is "seventy-nine billion, eight hundred nineteen million, one hundred forty-five thousand, five hundred forty-eight".