199425608536 has 128 divisors (see below), whose sum is σ = 487169510400. Its totient is φ = 74211540480.

The previous prime is 199425608497. The next prime is 199425608561. The reversal of 199425608536 is 635806524991.

It is a hoax number, since the sum of its digits (58) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10035186 + ... + 10055038.

It is an arithmetic number, because the mean of its divisors is an integer number (3806011800).

Almost surely, 2^199425608536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 199425608536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (243584755200).

199425608536 is an abundant number, since it is smaller than the sum of its proper divisors (287743901864).

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

199425608536 is a wasteful number, since it uses less digits than its factorization.

199425608536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20609 (or 20605 counting only the distinct ones).

The product of its (nonzero) digits is 13996800, while the sum is 58.

The spelling of 199425608536 in words is "one hundred ninety-nine billion, four hundred twenty-five million, six hundred eight thousand, five hundred thirty-six".