80680138560 has 672 divisors, whose sum is σ = 333573120000. Its totient is φ = 18303086592.

The previous prime is 80680138543. The next prime is 80680138589. The reversal of 80680138560 is 6583108608.

80680138560 is a `hidden beast` number, since 8 + 0 + 6 + 80 + 1 + 3 + 8 + 560 = 666.

It is a tau number, because it is divible by the number of its divisors (672).

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 95 ways as a sum of consecutive naturals, for example, 63080001 + ... + 63081279.

Almost surely, 2^80680138560 is an apocalyptic number.

80680138560 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 80680138560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166786560000).

80680138560 is an abundant number, since it is smaller than the sum of its proper divisors (252892981440).

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

80680138560 is a wasteful number, since it uses less digits than its factorization.

80680138560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1468 (or 1445 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The spelling of 80680138560 in words is "eighty billion, six hundred eighty million, one hundred thirty-eight thousand, five hundred sixty".