80495865720 has 80 divisors (see below), whose sum is σ = 270555559560. Its totient is φ = 21465563328.

The previous prime is 80495865683. The next prime is 80495865757. The reversal of 80495865720 is 2756859408.

80495865720 is a `hidden beast` number, since 8 + 0 + 4 + 9 + 586 + 57 + 2 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (80495865683) and next prime (80495865757).

It is a super-2 number, since 2×80495865720² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12418962 + ... + 12425441.

Almost surely, 2^80495865720 is an apocalyptic number.

It is an amenable number.

80495865720 is an abundant number, since it is smaller than the sum of its proper divisors (190059693840).

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

80495865720 is a wasteful number, since it uses less digits than its factorization.

80495865720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24844426 (or 24844413 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 54.

The spelling of 80495865720 in words is "eighty billion, four hundred ninety-five million, eight hundred sixty-five thousand, seven hundred twenty".