199343751684 has 192 divisors, whose sum is σ = 601219971072. Its totient is φ = 49905331200.

The previous prime is 199343751589. The next prime is 199343751703. The reversal of 199343751684 is 486157343991.

It is a Smith number, since the sum of its digits (60) 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 63 ways as a sum of consecutive naturals, for example, 3112674 + ... + 3176070.

It is an arithmetic number, because the mean of its divisors is an integer number (3131354016).

Almost surely, 2^199343751684 is an apocalyptic number.

199343751684 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 199343751684, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (300609985536).

199343751684 is an abundant number, since it is smaller than the sum of its proper divisors (401876219388).

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

199343751684 is a wasteful number, since it uses less digits than its factorization.

199343751684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63546 (or 63544 counting only the distinct ones).

The product of its digits is 19595520, while the sum is 60.

The spelling of 199343751684 in words is "one hundred ninety-nine billion, three hundred forty-three million, seven hundred fifty-one thousand, six hundred eighty-four".