199997145360 has 120 divisors (see below), whose sum is σ = 696533335680. Its totient is φ = 53332566912.

The previous prime is 199997145353. The next prime is 199997145367. The reversal of 199997145360 is 63541799991.

199997145360 is a `hidden beast` number, since 1 + 9 + 9 + 9 + 97 + 1 + 4 + 536 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (199997145353) and next prime (199997145367).

It is a tau number, because it is divible by the number of its divisors (120).

It is not an unprimeable number, because it can be changed into a prime (199997145367) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5124520 + ... + 5163399.

It is an arithmetic number, because the mean of its divisors is an integer number (5804444464).

Almost surely, 2^199997145360 is an apocalyptic number.

199997145360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

199997145360 is an abundant number, since it is smaller than the sum of its proper divisors (496536190320).

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

199997145360 is a wasteful number, since it uses less digits than its factorization.

199997145360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10287947 (or 10287929 counting only the distinct ones).

The product of its (nonzero) digits is 16533720, while the sum is 63.

The spelling of 199997145360 in words is "one hundred ninety-nine billion, nine hundred ninety-seven million, one hundred forty-five thousand, three hundred sixty".