79582981680 has 80 divisors (see below), whose sum is σ = 274119166560. Its totient is φ = 21222127872.

The previous prime is 79582981649. The next prime is 79582981783. The reversal of 79582981680 is 8618928597.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

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 15 ways as a sum of consecutive naturals, for example, 18419827 + ... + 18424146.

It is an arithmetic number, because the mean of its divisors is an integer number (3426489582).

Almost surely, 2^79582981680 is an apocalyptic number.

It is an amenable number.

79582981680 is an abundant number, since it is smaller than the sum of its proper divisors (194536184880).

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

79582981680 is a wasteful number, since it uses less digits than its factorization.

79582981680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36843995 (or 36843983 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 63.

The spelling of 79582981680 in words is "seventy-nine billion, five hundred eighty-two million, nine hundred eighty-one thousand, six hundred eighty".