80999351800 has 24 divisors (see below), whose sum is σ = 188323493400. Its totient is φ = 32399740640.

The previous prime is 80999351791. The next prime is 80999351809. The reversal of 80999351800 is 815399908.

It is an interprime number because it is at equal distance from previous prime (80999351791) and next prime (80999351809).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80999351809) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 202498180 + ... + 202498579.

It is an arithmetic number, because the mean of its divisors is an integer number (7846812225).

Almost surely, 2^80999351800 is an apocalyptic number.

It is an amenable number.

80999351800 is an abundant number, since it is smaller than the sum of its proper divisors (107324141600).

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

80999351800 is a wasteful number, since it uses less digits than its factorization.

80999351800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404996775 (or 404996766 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 52.

The spelling of 80999351800 in words is "eighty billion, nine hundred ninety-nine million, three hundred fifty-one thousand, eight hundred".