800505578055 has 24 divisors (see below), whose sum is σ = 1360582498512. Its totient is φ = 401822405632.

The previous prime is 800505578017. The next prime is 800505578087. The reversal of 800505578055 is 550875505008.

It is a happy number.

800505578055 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 800505578055 - 2¹¹ = 800505576007 is a prime.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 800505577995 and 800505578013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 92326182 + ... + 92334851.

It is an arithmetic number, because the mean of its divisors is an integer number (56690937438).

Almost surely, 2^800505578055 is an apocalyptic number.

800505578055 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

800505578055 is a deficient number, since it is larger than the sum of its proper divisors (560076920457).

800505578055 is a wasteful number, since it uses less digits than its factorization.

800505578055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184661075 (or 184661058 counting only the distinct ones).

The product of its (nonzero) digits is 1400000, while the sum is 48.

The spelling of 800505578055 in words is "eight hundred billion, five hundred five million, five hundred seventy-eight thousand, fifty-five".