80515931760 has 720 divisors, whose sum is σ = 324426155040. Its totient is φ = 17722736640.

The previous prime is 80515931707. The next prime is 80515931773. The reversal of 80515931760 is 6713951508.

It is a happy number.

80515931760 is a `hidden beast` number, since 8 + 0 + 51 + 593 + 1 + 7 + 6 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (720).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 66376914 + ... + 66378126.

It is an arithmetic number, because the mean of its divisors is an integer number (450591882).

Almost surely, 2^80515931760 is an apocalyptic number.

80515931760 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 80515931760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162213077520).

80515931760 is an abundant number, since it is smaller than the sum of its proper divisors (243910223280).

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

80515931760 is a wasteful number, since it uses less digits than its factorization.

80515931760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1306 (or 1280 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 45.

The spelling of 80515931760 in words is "eighty billion, five hundred fifteen million, nine hundred thirty-one thousand, seven hundred sixty".