83321220992 has 64 divisors (see below), whose sum is σ = 170068680000. Its totient is φ = 40643026944.

The previous prime is 83321220973. The next prime is 83321221021. The reversal of 83321220992 is 29902212338.

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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1860884 + ... + 1905132.

It is an arithmetic number, because the mean of its divisors is an integer number (2657323125).

Almost surely, 2^83321220992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83321220992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85034340000).

83321220992 is an abundant number, since it is smaller than the sum of its proper divisors (86747459008).

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

83321220992 is a wasteful number, since it uses less digits than its factorization.

83321220992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44623 (or 44611 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 41.

The spelling of 83321220992 in words is "eighty-three billion, three hundred twenty-one million, two hundred twenty thousand, nine hundred ninety-two".