83491888000 has 64 divisors (see below), whose sum is σ = 207581746320. Its totient is φ = 33396748800.

The previous prime is 83491887991. The next prime is 83491888013. The reversal of 83491888000 is 88819438.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2593122 + ... + 2625121.

Almost surely, 2^83491888000 is an apocalyptic number.

83491888000 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

83491888000 is an abundant number, since it is smaller than the sum of its proper divisors (124089858320).

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

83491888000 is an equidigital number, since it uses as much as digits as its factorization.

83491888000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5218272 (or 5218250 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 49.

The spelling of 83491888000 in words is "eighty-three billion, four hundred ninety-one million, eight hundred eighty-eight thousand".