199791120370 has 16 divisors (see below), whose sum is σ = 369343585368. Its totient is φ = 77756544000.

The previous prime is 199791120367. The next prime is 199791120371. The reversal of 199791120370 is 73021197991.

It can be written as a sum of positive squares in 4 ways, for example, as 199779499089 + 11621281 = 446967^2 + 3409^2 .

It is not an unprimeable number, because it can be changed into a prime (199791120371) 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, 269987631 + ... + 269988370.

Almost surely, 2^199791120370 is an apocalyptic number.

199791120370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

199791120370 is a deficient number, since it is larger than the sum of its proper divisors (169552464998).

199791120370 is a wasteful number, since it uses less digits than its factorization.

199791120370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539976045.

The product of its (nonzero) digits is 214326, while the sum is 49.

The spelling of 199791120370 in words is "one hundred ninety-nine billion, seven hundred ninety-one million, one hundred twenty thousand, three hundred seventy".