80331878818 has 32 divisors (see below), whose sum is σ = 127493498880. Its totient is φ = 37856160000.

The previous prime is 80331878813. The next prime is 80331878827. The reversal of 80331878818 is 81887813308.

It is not an unprimeable number, because it can be changed into a prime (80331878813) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10537048 + ... + 10544668.

It is an arithmetic number, because the mean of its divisors is an integer number (3984171840).

Almost surely, 2^80331878818 is an apocalyptic number.

80331878818 is a deficient number, since it is larger than the sum of its proper divisors (47161620062).

80331878818 is a wasteful number, since it uses less digits than its factorization.

80331878818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9034.

The product of its (nonzero) digits is 2064384, while the sum is 55.

The spelling of 80331878818 in words is "eighty billion, three hundred thirty-one million, eight hundred seventy-eight thousand, eight hundred eighteen".