80801391520 has 48 divisors (see below), whose sum is σ = 197475825960. Its totient is φ = 31206052864.

The previous prime is 80801391509. The next prime is 80801391529. The reversal of 80801391520 is 2519310808.

It can be written as a sum of positive squares in 4 ways, for example, as 74012290704 + 6789100816 = 272052^2 + 82396^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 80801391520.

It is not an unprimeable number, because it can be changed into a prime (80801391529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8702407 + ... + 8711686.

Almost surely, 2^80801391520 is an apocalyptic number.

80801391520 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

80801391520 is an abundant number, since it is smaller than the sum of its proper divisors (116674434440).

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

80801391520 is a wasteful number, since it uses less digits than its factorization.

80801391520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17414137 (or 17414129 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 37.

The spelling of 80801391520 in words is "eighty billion, eight hundred one million, three hundred ninety-one thousand, five hundred twenty".