80440556508 has 72 divisors (see below), whose sum is σ = 219013594800. Its totient is φ = 24746812416.

The previous prime is 80440556503. The next prime is 80440556533. The reversal of 80440556508 is 80565504408.

80440556508 is a `hidden beast` number, since 8 + 0 + 4 + 40 + 556 + 50 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80440556501) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3986188 + ... + 4006316.

Almost surely, 2^80440556508 is an apocalyptic number.

It is an amenable number.

80440556508 is an abundant number, since it is smaller than the sum of its proper divisors (138573038292).

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

80440556508 is a wasteful number, since it uses less digits than its factorization.

80440556508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28691 (or 28686 counting only the distinct ones).

The product of its (nonzero) digits is 768000, while the sum is 45.

The spelling of 80440556508 in words is "eighty billion, four hundred forty million, five hundred fifty-six thousand, five hundred eight".