199812807793 has 8 divisors (see below), whose sum is σ = 201086424000. Its totient is φ = 198540110160.

The previous prime is 199812807757. The next prime is 199812807847. The reversal of 199812807793 is 397708218991.

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 199812807793 - 2³⁷ = 62373854321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199812805793) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209458 + ... + 665956.

It is an arithmetic number, because the mean of its divisors is an integer number (25135803000).

Almost surely, 2^199812807793 is an apocalyptic number.

It is an amenable number.

199812807793 is a deficient number, since it is larger than the sum of its proper divisors (1273616207).

199812807793 is a wasteful number, since it uses less digits than its factorization.

199812807793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459287.

The product of its (nonzero) digits is 13716864, while the sum is 64.

The spelling of 199812807793 in words is "one hundred ninety-nine billion, eight hundred twelve million, eight hundred seven thousand, seven hundred ninety-three".