80199097920 has 392 divisors, whose sum is σ = 288691344384. Its totient is φ = 21210190848.

The previous prime is 80199097883. The next prime is 80199097933. The reversal of 80199097920 is 2979099108.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 29625207 + ... + 29627913.

Almost surely, 2^80199097920 is an apocalyptic number.

80199097920 is a gapful number since it is divisible by the number (80) 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 80199097920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144345672192).

80199097920 is an abundant number, since it is smaller than the sum of its proper divisors (208492246464).

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

80199097920 is a wasteful number, since it uses less digits than its factorization.

80199097920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2869 (or 2844 counting only the distinct ones).

The product of its (nonzero) digits is 734832, while the sum is 54.

The spelling of 80199097920 in words is "eighty billion, one hundred ninety-nine million, ninety-seven thousand, nine hundred twenty".