80520917760 has 432 divisors, whose sum is σ = 302742236160. Its totient is φ = 19684270080.

The previous prime is 80520917693. The next prime is 80520917797. The reversal of 80520917760 is 6771902508.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6779347 + ... + 6791213.

Almost surely, 2^80520917760 is an apocalyptic number.

80520917760 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 80520917760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151371118080).

80520917760 is an abundant number, since it is smaller than the sum of its proper divisors (222221318400).

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

80520917760 is a wasteful number, since it uses less digits than its factorization.

80520917760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11944 (or 11927 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 45.

The spelling of 80520917760 in words is "eighty billion, five hundred twenty million, nine hundred seventeen thousand, seven hundred sixty".