8780383825921 has 16 divisors (see below), whose sum is σ = 8963714727504. Its totient is φ = 8597712707584.

The previous prime is 8780383825901. The next prime is 8780383825933. The reversal of 8780383825921 is 1295283830878.

It can be written as a sum of positive squares in 8 ways, for example, as 2674027521 + 8777709798400 = 51711^2 + 2962720^2 .

It is a cyclic number.

It is not a de Polignac number, because 8780383825921 - 2¹¹ = 8780383823873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8780383825901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 187523505 + ... + 187570321.

It is an arithmetic number, because the mean of its divisors is an integer number (560232170469).

Almost surely, 2^{8780383825921} is an apocalyptic number.

It is an amenable number.

8780383825921 is a deficient number, since it is larger than the sum of its proper divisors (183330901583).

8780383825921 is a wasteful number, since it uses less digits than its factorization.

8780383825921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53780.

The product of its (nonzero) digits is 46448640, while the sum is 64.

The spelling of 8780383825921 in words is "eight trillion, seven hundred eighty billion, three hundred eighty-three million, eight hundred twenty-five thousand, nine hundred twenty-one".