196688701901 has 2 divisors, whose sum is σ = 196688701902. Its totient is φ = 196688701900.

The previous prime is 196688701883. The next prime is 196688702029. The reversal of 196688701901 is 109107886691.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 192887856100 + 3800845801 = 439190^2 + 61651^2 .

It is a cyclic number.

It is not a de Polignac number, because 196688701901 - 2²² = 196684507597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (196688701301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98344350950 + 98344350951.

It is an arithmetic number, because the mean of its divisors is an integer number (98344350951).

Almost surely, 2^196688701901 is an apocalyptic number.

It is an amenable number.

196688701901 is a deficient number, since it is larger than the sum of its proper divisors (1).

196688701901 is an equidigital number, since it uses as much as digits as its factorization.

196688701901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1306368, while the sum is 56.

The spelling of 196688701901 in words is "one hundred ninety-six billion, six hundred eighty-eight million, seven hundred one thousand, nine hundred one".