80521116624 has 120 divisors (see below), whose sum is σ = 256957194312. Its totient is φ = 23318323200.

The previous prime is 80521116619. The next prime is 80521116667. The reversal of 80521116624 is 42661112508.

It is a happy number.

80521116624 is a `hidden beast` number, since 8 + 0 + 5 + 2 + 11 + 16 + 624 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 53582400 + 80467534224 = 7320^2 + 283668^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1233277 + ... + 1296924.

Almost surely, 2^80521116624 is an apocalyptic number.

It is an amenable number.

80521116624 is an abundant number, since it is smaller than the sum of its proper divisors (176436077688).

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

80521116624 is a wasteful number, since it uses less digits than its factorization.

80521116624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2530245 (or 2530236 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The spelling of 80521116624 in words is "eighty billion, five hundred twenty-one million, one hundred sixteen thousand, six hundred twenty-four".