80905288192 has 80 divisors (see below), whose sum is σ = 167306682312. Its totient is φ = 39058145280.

The previous prime is 80905288169. The next prime is 80905288201. The reversal of 80905288192 is 29188250908.

It can be written as a sum of positive squares in 4 ways, for example, as 67259310336 + 13645977856 = 259344^2 + 116816^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2016358 + ... + 2056090.

Almost surely, 2^80905288192 is an apocalyptic number.

80905288192 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80905288192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83653341156).

80905288192 is an abundant number, since it is smaller than the sum of its proper divisors (86401394120).

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

80905288192 is an equidigital number, since it uses as much as digits as its factorization.

80905288192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39889 (or 39873 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 52.

The spelling of 80905288192 in words is "eighty billion, nine hundred five million, two hundred eighty-eight thousand, one hundred ninety-two".