83921289800 has 24 divisors (see below), whose sum is σ = 195116999250. Its totient is φ = 33568515840.

The previous prime is 83921289763. The next prime is 83921289869. The reversal of 83921289800 is 898212938.

It can be written as a sum of positive squares in 3 ways, for example, as 67208488516 + 16712801284 = 259246^2 + 129278^2 .

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (50).

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 5 ways as a sum of consecutive naturals, for example, 209803025 + ... + 209803424.

Almost surely, 2^83921289800 is an apocalyptic number.

It is an amenable number.

83921289800 is an abundant number, since it is smaller than the sum of its proper divisors (111195709450).

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

83921289800 is a wasteful number, since it uses less digits than its factorization.

83921289800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419606465 (or 419606456 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 50.

The spelling of 83921289800 in words is "eighty-three billion, nine hundred twenty-one million, two hundred eighty-nine thousand, eight hundred".