198933406041623 has 16 divisors (see below), whose sum is σ = 217186517745792. Its totient is φ = 180708349500000.

The previous prime is 198933406041613. The next prime is 198933406041649. The reversal of 198933406041623 is 326140604339891.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-198933406041623 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 (198933406041613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 333342248 + ... + 333938498.

It is an arithmetic number, because the mean of its divisors is an integer number (13574157359112).

Almost surely, 2^{198933406041623} is an apocalyptic number.

198933406041623 is a deficient number, since it is larger than the sum of its proper divisors (18253111704169).

198933406041623 is a wasteful number, since it uses less digits than its factorization.

198933406041623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619726.

The product of its (nonzero) digits is 20155392, while the sum is 59.

The spelling of 198933406041623 in words is "one hundred ninety-eight trillion, nine hundred thirty-three billion, four hundred six million, forty-one thousand, six hundred twenty-three".