199044401701 has 2 divisors, whose sum is σ = 199044401702. Its totient is φ = 199044401700.

The previous prime is 199044401659. The next prime is 199044401713. The reversal of 199044401701 is 107104440991.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 128805621025 + 70238780676 = 358895^2 + 265026^2 .

It is a cyclic number.

It is not a de Polignac number, because 199044401701 - 2³⁵ = 164684663333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199044401771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99522200850 + 99522200851.

It is an arithmetic number, because the mean of its divisors is an integer number (99522200851).

Almost surely, 2^199044401701 is an apocalyptic number.

It is an amenable number.

199044401701 is a deficient number, since it is larger than the sum of its proper divisors (1).

199044401701 is an equidigital number, since it uses as much as digits as its factorization.

199044401701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 40.

The spelling of 199044401701 in words is "one hundred ninety-nine billion, forty-four million, four hundred one thousand, seven hundred one".