199553639994 has 12 divisors (see below), whose sum is σ = 432366220026. Its totient is φ = 66517879992.

The previous prime is 199553639963. The next prime is 199553640019. The reversal of 199553639994 is 499936355991.

199553639994 is a `hidden beast` number, since 1 + 9 + 9 + 553 + 63 + 9 + 9 + 9 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 164076033969 + 35477606025 = 405063^2 + 188355^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5543156649 + ... + 5543156684.

Almost surely, 2^199553639994 is an apocalyptic number.

199553639994 is an abundant number, since it is smaller than the sum of its proper divisors (232812580032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

199553639994 is a wasteful number, since it uses less digits than its factorization.

199553639994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11086313341 (or 11086313338 counting only the distinct ones).

The product of its digits is 318864600, while the sum is 72.

The spelling of 199553639994 in words is "one hundred ninety-nine billion, five hundred fifty-three million, six hundred thirty-nine thousand, nine hundred ninety-four".