199660462453 has 2 divisors, whose sum is σ = 199660462454. Its totient is φ = 199660462452.

The previous prime is 199660462403. The next prime is 199660462459. The reversal of 199660462453 is 354264066991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 180177327729 + 19483134724 = 424473^2 + 139582^2 .

It is a cyclic number.

It is not a de Polignac number, because 199660462453 - 2²⁵ = 199626908021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 199660462394 and 199660462403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199660462459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99830231226 + 99830231227.

It is an arithmetic number, because the mean of its divisors is an integer number (99830231227).

Almost surely, 2^199660462453 is an apocalyptic number.

It is an amenable number.

199660462453 is a deficient number, since it is larger than the sum of its proper divisors (1).

199660462453 is an equidigital number, since it uses as much as digits as its factorization.

199660462453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8398080, while the sum is 55.

The spelling of 199660462453 in words is "one hundred ninety-nine billion, six hundred sixty million, four hundred sixty-two thousand, four hundred fifty-three".