8178079980 has 48 divisors (see below), whose sum is σ = 26169857280. Its totient is φ = 1869275328.

The previous prime is 8178079969. The next prime is 8178080017. The reversal of 8178079980 is 899708718.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 8178079980.

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, 9735390 + ... + 9736229.

It is an arithmetic number, because the mean of its divisors is an integer number (545205360).

Almost surely, 2^8178079980 is an apocalyptic number.

It is an amenable number.

8178079980 is an abundant number, since it is smaller than the sum of its proper divisors (17991777300).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8178079980 is a wasteful number, since it uses less digits than its factorization.

8178079980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19471638 (or 19471636 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 57.

The square root of 8178079980 is about 90432.7373244889. The cubic root of 8178079980 is about 2014.7312274021.

The spelling of 8178079980 in words is "eight billion, one hundred seventy-eight million, seventy-nine thousand, nine hundred eighty".