208998209023 has 2 divisors, whose sum is σ = 208998209024. Its totient is φ = 208998209022.

The previous prime is 208998208883. The next prime is 208998209047. The reversal of 208998209023 is 320902899802.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 208998209023 - 2³³ = 200408274431 is a prime.

It is a super-2 number, since 2×208998209023² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (208998209053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104499104511 + 104499104512.

It is an arithmetic number, because the mean of its divisors is an integer number (104499104512).

Almost surely, 2^208998209023 is an apocalyptic number.

208998209023 is a deficient number, since it is larger than the sum of its proper divisors (1).

208998209023 is an equidigital number, since it uses as much as digits as its factorization.

208998209023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1119744, while the sum is 52.

The spelling of 208998209023 in words is "two hundred eight billion, nine hundred ninety-eight million, two hundred nine thousand, twenty-three".