202104400691 has 2 divisors, whose sum is σ = 202104400692. Its totient is φ = 202104400690.

The previous prime is 202104400681. The next prime is 202104400709. The reversal of 202104400691 is 196004401202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 202104400691 - 2¹⁰ = 202104399667 is a prime.

It is not a weakly prime, because it can be changed into another prime (202104400621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101052200345 + 101052200346.

It is an arithmetic number, because the mean of its divisors is an integer number (101052200346).

Almost surely, 2^202104400691 is an apocalyptic number.

202104400691 is a deficient number, since it is larger than the sum of its proper divisors (1).

202104400691 is an equidigital number, since it uses as much as digits as its factorization.

202104400691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 29.

Adding to 202104400691 its reverse (196004401202), we get a palindrome (398108801893).

The spelling of 202104400691 in words is "two hundred two billion, one hundred four million, four hundred thousand, six hundred ninety-one".