199779224900 has 36 divisors (see below), whose sum is σ = 439626862080. Its totient is φ = 78786170400.

The previous prime is 199779224899. The next prime is 199779224933. The reversal of 199779224900 is 9422977991.

It is a self number, because there is not a number n which added to its sum of digits gives 199779224900.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14061860 + ... + 14076059.

It is an arithmetic number, because the mean of its divisors is an integer number (12211857280).

Almost surely, 2^199779224900 is an apocalyptic number.

199779224900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

199779224900 is an abundant number, since it is smaller than the sum of its proper divisors (239847637180).

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

199779224900 is a wasteful number, since it uses less digits than its factorization.

199779224900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28138004 (or 28137997 counting only the distinct ones).

The product of its (nonzero) digits is 5143824, while the sum is 59.

The spelling of 199779224900 in words is "one hundred ninety-nine billion, seven hundred seventy-nine million, two hundred twenty-four thousand, nine hundred".