199688901328 has 40 divisors (see below), whose sum is σ = 452952884160. Its totient is φ = 83493615360.

The previous prime is 199688901317. The next prime is 199688901343. The reversal of 199688901328 is 823109886991.

It is a self number, because there is not a number n which added to its sum of digits gives 199688901328.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21738538 + ... + 21747721.

It is an arithmetic number, because the mean of its divisors is an integer number (11323822104).

Almost surely, 2^199688901328 is an apocalyptic number.

It is an amenable number.

199688901328 is an abundant number, since it is smaller than the sum of its proper divisors (253263982832).

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

199688901328 is a wasteful number, since it uses less digits than its factorization.

199688901328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43486315 (or 43486309 counting only the distinct ones).

The product of its (nonzero) digits is 13436928, while the sum is 64.

The spelling of 199688901328 in words is "one hundred ninety-nine billion, six hundred eighty-eight million, nine hundred one thousand, three hundred twenty-eight".