81232622200 has 48 divisors (see below), whose sum is σ = 188919002160. Its totient is φ = 32483904000.

The previous prime is 81232622183. The next prime is 81232622201. The reversal of 81232622200 is 222623218.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81232622201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 678880 + ... + 789520.

It is an arithmetic number, because the mean of its divisors is an integer number (3935812545).

Almost surely, 2^81232622200 is an apocalyptic number.

It is an amenable number.

81232622200 is an abundant number, since it is smaller than the sum of its proper divisors (107686379960).

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

81232622200 is a wasteful number, since it uses less digits than its factorization.

81232622200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114328 (or 114319 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The spelling of 81232622200 in words is "eighty-one billion, two hundred thirty-two million, six hundred twenty-two thousand, two hundred".