80406955520 has 120 divisors (see below), whose sum is σ = 198148192704. Its totient is φ = 31292153856.

The previous prime is 80406955511. The next prime is 80406955523. The reversal of 80406955520 is 2555960408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80406955523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3493169 + ... + 3516111.

Almost surely, 2^80406955520 is an apocalyptic number.

80406955520 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 80406955520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99074096352).

80406955520 is an abundant number, since it is smaller than the sum of its proper divisors (117741237184).

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

80406955520 is an equidigital number, since it uses as much as digits as its factorization.

80406955520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23040 (or 22987 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 44.

The spelling of 80406955520 in words is "eighty billion, four hundred six million, nine hundred fifty-five thousand, five hundred twenty".