80128800187 has 4 divisors (see below), whose sum is σ = 84346105480. Its totient is φ = 75911494896.

The previous prime is 80128800179. The next prime is 80128800197. The reversal of 80128800187 is 78100882108.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 80128800187 - 2³ = 80128800179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80128800197) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2108652618 + ... + 2108652655.

It is an arithmetic number, because the mean of its divisors is an integer number (21086526370).

Almost surely, 2^80128800187 is an apocalyptic number.

80128800187 is a deficient number, since it is larger than the sum of its proper divisors (4217305293).

80128800187 is a wasteful number, since it uses less digits than its factorization.

80128800187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4217305292.

The product of its (nonzero) digits is 57344, while the sum is 43.

The spelling of 80128800187 in words is "eighty billion, one hundred twenty-eight million, eight hundred thousand, one hundred eighty-seven".