199343751812 has 12 divisors (see below), whose sum is σ = 364019025216. Its totient is φ = 95338316040.

The previous prime is 199343751769. The next prime is 199343751863. The reversal of 199343751812 is 218157343991.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1083389864 + ... + 1083390047.

It is an arithmetic number, because the mean of its divisors is an integer number (30334918768).

Almost surely, 2^199343751812 is an apocalyptic number.

It is an amenable number.

199343751812 is a deficient number, since it is larger than the sum of its proper divisors (164675273404).

199343751812 is a wasteful number, since it uses less digits than its factorization.

199343751812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2166779938 (or 2166779936 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 53.

The spelling of 199343751812 in words is "one hundred ninety-nine billion, three hundred forty-three million, seven hundred fifty-one thousand, eight hundred twelve".