199698972774 has 32 divisors (see below), whose sum is σ = 458748556800. Its totient is φ = 56770129152.

The previous prime is 199698972743. The next prime is 199698972793. The reversal of 199698972774 is 477279896991.

It is a self number, because there is not a number n which added to its sum of digits gives 199698972774.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11938219 + ... + 11954934.

It is an arithmetic number, because the mean of its divisors is an integer number (14335892400).

Almost surely, 2^199698972774 is an apocalyptic number.

199698972774 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

199698972774 is an abundant number, since it is smaller than the sum of its proper divisors (259049584026).

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

199698972774 is a wasteful number, since it uses less digits than its factorization.

199698972774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23893364.

The product of its digits is 864162432, while the sum is 78.

The spelling of 199698972774 in words is "one hundred ninety-nine billion, six hundred ninety-eight million, nine hundred seventy-two thousand, seven hundred seventy-four".