80855785830 has 32 divisors (see below), whose sum is σ = 194064309504. Its totient is φ = 21560384736.

The previous prime is 80855785819. The next prime is 80855785831. The reversal of 80855785830 is 3858755808.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80855785831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 596877 + ... + 719703.

It is an arithmetic number, because the mean of its divisors is an integer number (6064509672).

Almost surely, 2^80855785830 is an apocalyptic number.

80855785830 is an abundant number, since it is smaller than the sum of its proper divisors (113208523674).

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

80855785830 is a wasteful number, since it uses less digits than its factorization.

80855785830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144780.

The product of its (nonzero) digits is 10752000, while the sum is 57.

The spelling of 80855785830 in words is "eighty billion, eight hundred fifty-five million, seven hundred eighty-five thousand, eight hundred thirty".