199927025424 has 135 divisors (see below), whose sum is σ = 650990169063. Its totient is φ = 57111276096.

The previous prime is 199927025407. The next prime is 199927025443. The reversal of 199927025424 is 424520729991.

It is a happy number.

The square root of 199927025424 is 447132.

It is a perfect power (a square), and thus also a powerful number.

199927025424 is a `hidden beast` number, since 1 + 9 + 9 + 92 + 7 + 0 + 2 + 542 + 4 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 37556427 + ... + 37561749.

Almost surely, 2^199927025424 is an apocalyptic number.

199927025424 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

199927025424 is the 447132-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 199927025424

199927025424 is an abundant number, since it is smaller than the sum of its proper divisors (451063143639).

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

199927025424 is an frugal number, since it uses more digits than its factorization.

199927025424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10674 (or 5335 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

The spelling of 199927025424 in words is "one hundred ninety-nine billion, nine hundred twenty-seven million, twenty-five thousand, four hundred twenty-four".