199273425850 has 12 divisors (see below), whose sum is σ = 370648572174. Its totient is φ = 79709370320.

The previous prime is 199273425829. The next prime is 199273425863. The reversal of 199273425850 is 58524372991.

It can be written as a sum of positive squares in 3 ways, for example, as 175114630089 + 24158795761 = 418467^2 + 155431^2 .

It is a junction number, because it is equal to n+sod(n) for n = 199273425791 and 199273425800.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1992734209 + ... + 1992734308.

Almost surely, 2^199273425850 is an apocalyptic number.

199273425850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

199273425850 is a deficient number, since it is larger than the sum of its proper divisors (171375146324).

199273425850 is a wasteful number, since it uses less digits than its factorization.

199273425850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3985468529 (or 3985468524 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 55.

The spelling of 199273425850 in words is "one hundred ninety-nine billion, two hundred seventy-three million, four hundred twenty-five thousand, eight hundred fifty".