199660462405 has 8 divisors (see below), whose sum is σ = 239597791992. Its totient is φ = 159724878528.

The previous prime is 199660462403. The next prime is 199660462453. The reversal of 199660462405 is 504264066991.

199660462405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 67326756676 + 132333705729 = 259474^2 + 363777^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 199660462405 - 2¹ = 199660462403 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199660462403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170022 + ... + 654391.

It is an arithmetic number, because the mean of its divisors is an integer number (29949723999).

Almost surely, 2^199660462405 is an apocalyptic number.

It is an amenable number.

199660462405 is a deficient number, since it is larger than the sum of its proper divisors (39937329587).

199660462405 is an equidigital number, since it uses as much as digits as its factorization.

199660462405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872855.

The product of its (nonzero) digits is 2799360, while the sum is 52.

The spelling of 199660462405 in words is "one hundred ninety-nine billion, six hundred sixty million, four hundred sixty-two thousand, four hundred five".