204690652819 has 2 divisors, whose sum is σ = 204690652820. Its totient is φ = 204690652818.

The previous prime is 204690652813. The next prime is 204690652861. The reversal of 204690652819 is 918256096402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 204690652819 - 2⁹ = 204690652307 is a prime.

It is a super-2 number, since 2×204690652819² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (204690652813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102345326409 + 102345326410.

It is an arithmetic number, because the mean of its divisors is an integer number (102345326410).

Almost surely, 2^204690652819 is an apocalyptic number.

204690652819 is a deficient number, since it is larger than the sum of its proper divisors (1).

204690652819 is an equidigital number, since it uses as much as digits as its factorization.

204690652819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1866240, while the sum is 52.

The spelling of 204690652819 in words is "two hundred four billion, six hundred ninety million, six hundred fifty-two thousand, eight hundred nineteen".