202109963893249 has 2 divisors, whose sum is σ = 202109963893250. Its totient is φ = 202109963893248.

The previous prime is 202109963893223. The next prime is 202109963893273. The reversal of 202109963893249 is 942398369901202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 185140243890625 + 16969720002624 = 13606625^2 + 4119432^2 .

It is a cyclic number.

It is not a de Polignac number, because 202109963893249 - 2¹⁷ = 202109963762177 is a prime.

It is not a weakly prime, because it can be changed into another prime (202109963893549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101054981946624 + 101054981946625.

It is an arithmetic number, because the mean of its divisors is an integer number (101054981946625).

Almost surely, 2^{202109963893249} is an apocalyptic number.

It is an amenable number.

202109963893249 is a deficient number, since it is larger than the sum of its proper divisors (1).

202109963893249 is an equidigital number, since it uses as much as digits as its factorization.

202109963893249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90699264, while the sum is 67.

The spelling of 202109963893249 in words is "two hundred two trillion, one hundred nine billion, nine hundred sixty-three million, eight hundred ninety-three thousand, two hundred forty-nine".