80555050565 has 16 divisors (see below), whose sum is σ = 105510142080. Its totient is φ = 58554237120.

The previous prime is 80555050561. The next prime is 80555050577. The reversal of 80555050565 is 56505055508.

It is not a de Polignac number, because 80555050565 - 2² = 80555050561 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80555050561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 286394 + ... + 493083.

It is an arithmetic number, because the mean of its divisors is an integer number (6594383880).

Almost surely, 2^80555050565 is an apocalyptic number.

It is an amenable number.

80555050565 is a deficient number, since it is larger than the sum of its proper divisors (24955091515).

80555050565 is a wasteful number, since it uses less digits than its factorization.

80555050565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 781372.

The product of its (nonzero) digits is 750000, while the sum is 44.

The spelling of 80555050565 in words is "eighty billion, five hundred fifty-five million, fifty thousand, five hundred sixty-five".