199943751336 has 32 divisors (see below), whose sum is σ = 571267861440. Its totient is φ = 57126786048.

The previous prime is 199943751311. The next prime is 199943751347. The reversal of 199943751336 is 633157349991.

199943751336 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 199943751336.

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, 595070521 + ... + 595070856.

It is an arithmetic number, because the mean of its divisors is an integer number (17852120670).

Almost surely, 2^199943751336 is an apocalyptic number.

It is an amenable number.

199943751336 is an abundant number, since it is smaller than the sum of its proper divisors (371324110104).

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

199943751336 is a wasteful number, since it uses less digits than its factorization.

199943751336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1190141393 (or 1190141389 counting only the distinct ones).

The product of its digits is 16533720, while the sum is 60.

It can be divided in two parts, 1999 and 43751336, that added together give a triangular number (43753335 = T₉₃₅₄).

The spelling of 199943751336 in words is "one hundred ninety-nine billion, nine hundred forty-three million, seven hundred fifty-one thousand, three hundred thirty-six".