196551022309 has 2 divisors, whose sum is σ = 196551022310. Its totient is φ = 196551022308.

The previous prime is 196551022259. The next prime is 196551022319. The reversal of 196551022309 is 903220155691.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 194549802084 + 2001220225 = 441078^2 + 44735^2 .

It is a cyclic number.

It is not a de Polignac number, because 196551022309 - 2³⁷ = 59112068837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (196551022319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98275511154 + 98275511155.

It is an arithmetic number, because the mean of its divisors is an integer number (98275511155).

Almost surely, 2^196551022309 is an apocalyptic number.

It is an amenable number.

196551022309 is a deficient number, since it is larger than the sum of its proper divisors (1).

196551022309 is an equidigital number, since it uses as much as digits as its factorization.

196551022309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145800, while the sum is 43.

The spelling of 196551022309 in words is "one hundred ninety-six billion, five hundred fifty-one million, twenty-two thousand, three hundred nine".