8875298972821 has 2 divisors, whose sum is σ = 8875298972822. Its totient is φ = 8875298972820.

The previous prime is 8875298972723. The next prime is 8875298972857. The reversal of 8875298972821 is 1282798925788.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8507109723025 + 368189249796 = 2916695^2 + 606786^2 .

It is a cyclic number.

It is not a de Polignac number, because 8875298972821 - 2⁴³ = 79205950613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8875298972861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4437649486410 + 4437649486411.

It is an arithmetic number, because the mean of its divisors is an integer number (4437649486411).

Almost surely, 2^{8875298972821} is an apocalyptic number.

It is an amenable number.

8875298972821 is a deficient number, since it is larger than the sum of its proper divisors (1).

8875298972821 is an equidigital number, since it uses as much as digits as its factorization.

8875298972821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 650280960, while the sum is 76.

The spelling of 8875298972821 in words is "eight trillion, eight hundred seventy-five billion, two hundred ninety-eight million, nine hundred seventy-two thousand, eight hundred twenty-one".