80189579918 has 16 divisors (see below), whose sum is σ = 137528544384. Its totient is φ = 34351789560.

The previous prime is 80189579917. The next prime is 80189579927. The reversal of 80189579918 is 81997598108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80189579917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1231568 + ... + 1295043.

It is an arithmetic number, because the mean of its divisors is an integer number (8595534024).

Almost surely, 2^80189579918 is an apocalyptic number.

80189579918 is a deficient number, since it is larger than the sum of its proper divisors (57338964466).

80189579918 is a wasteful number, since it uses less digits than its factorization.

80189579918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2528887.

The product of its (nonzero) digits is 13063680, while the sum is 65.

The spelling of 80189579918 in words is "eighty billion, one hundred eighty-nine million, five hundred seventy-nine thousand, nine hundred eighteen".