80704405920 has 384 divisors, whose sum is σ = 269481510144. Its totient is φ = 20277264384.

The previous prime is 80704405919. The next prime is 80704405963. The reversal of 80704405920 is 2950440708.

It is a super-2 number, since 2×80704405920² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 78125724 + ... + 78126756.

It is an arithmetic number, because the mean of its divisors is an integer number (701774766).

Almost surely, 2^80704405920 is an apocalyptic number.

80704405920 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 80704405920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134740755072).

80704405920 is an abundant number, since it is smaller than the sum of its proper divisors (188777104224).

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

80704405920 is a wasteful number, since it uses less digits than its factorization.

80704405920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1224 (or 1216 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 39.

The spelling of 80704405920 in words is "eighty billion, seven hundred four million, four hundred five thousand, nine hundred twenty".