202104961691 has 2 divisors, whose sum is σ = 202104961692. Its totient is φ = 202104961690.

The previous prime is 202104961679. The next prime is 202104961829. The reversal of 202104961691 is 196169401202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 202104961691 - 2⁶ = 202104961627 is a prime.

It is not a weakly prime, because it can be changed into another prime (202104966691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101052480845 + 101052480846.

It is an arithmetic number, because the mean of its divisors is an integer number (101052480846).

Almost surely, 2^202104961691 is an apocalyptic number.

202104961691 is a deficient number, since it is larger than the sum of its proper divisors (1).

202104961691 is an equidigital number, since it uses as much as digits as its factorization.

202104961691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 41.

The spelling of 202104961691 in words is "two hundred two billion, one hundred four million, nine hundred sixty-one thousand, six hundred ninety-one".