83921915304 has 24 divisors (see below), whose sum is σ = 227288520810. Its totient is φ = 27973971744.

The previous prime is 83921915281. The next prime is 83921915339. The reversal of 83921915304 is 40351912938.

It is a happy number.

83921915304 is a `hidden beast` number, since 8 + 3 + 9 + 21 + 91 + 530 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 79270402500 + 4651512804 = 281550^2 + 68202^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 83921915304.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 582791007 + ... + 582791150.

Almost surely, 2^83921915304 is an apocalyptic number.

It is an amenable number.

83921915304 is an abundant number, since it is smaller than the sum of its proper divisors (143366605506).

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

83921915304 is a wasteful number, since it uses less digits than its factorization.

83921915304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1165582169 (or 1165582162 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The spelling of 83921915304 in words is "eighty-three billion, nine hundred twenty-one million, nine hundred fifteen thousand, three hundred four".