80555076657540 has 72 divisors (see below), whose sum is σ = 246512792170008. Its totient is φ = 21291253294080.

The previous prime is 80555076657499. The next prime is 80555076657563. The reversal of 80555076657540 is 4575667055508.

80555076657540 is a `hidden beast` number, since 8 + 0 + 5 + 5 + 50 + 7 + 6 + 6 + 575 + 4 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 9160113858624 + 71394962798916 = 3026568^2 + 8449554^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1980192951 + ... + 1980233630.

It is an arithmetic number, because the mean of its divisors is an integer number (3423788780139).

Almost surely, 2^{80555076657540} is an apocalyptic number.

It is an amenable number.

80555076657540 is an abundant number, since it is smaller than the sum of its proper divisors (165957715512468).

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

80555076657540 is a wasteful number, since it uses less digits than its factorization.

80555076657540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3960426709 (or 3960426704 counting only the distinct ones).

The product of its (nonzero) digits is 176400000, while the sum is 63.

The spelling of 80555076657540 in words is "eighty trillion, five hundred fifty-five billion, seventy-six million, six hundred fifty-seven thousand, five hundred forty".