80730733920 has 192 divisors, whose sum is σ = 256505356800. Its totient is φ = 21342486528.

The previous prime is 80730733903. The next prime is 80730733927. The reversal of 80730733920 is 2933703708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80730733927) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29323264 + ... + 29326016.

It is an arithmetic number, because the mean of its divisors is an integer number (1335965400).

Almost surely, 2^80730733920 is an apocalyptic number.

80730733920 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 80730733920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128252678400).

80730733920 is an abundant number, since it is smaller than the sum of its proper divisors (175774622880).

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

80730733920 is a wasteful number, since it uses less digits than its factorization.

80730733920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3277 (or 3269 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 42.

The spelling of 80730733920 in words is "eighty billion, seven hundred thirty million, seven hundred thirty-three thousand, nine hundred twenty".