200021999950 has 24 divisors (see below), whose sum is σ = 376750306080. Its totient is φ = 78996028800.

The previous prime is 200021999923. The next prime is 200021999971. The reversal of 200021999950 is 59999120002.

It is a self number, because there is not a number n which added to its sum of digits gives 200021999950.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25315291 + ... + 25323190.

It is an arithmetic number, because the mean of its divisors is an integer number (15697929420).

Almost surely, 2^200021999950 is an apocalyptic number.

200021999950 is a deficient number, since it is larger than the sum of its proper divisors (176728306130).

200021999950 is a wasteful number, since it uses less digits than its factorization.

200021999950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50638572 (or 50638567 counting only the distinct ones).

The product of its (nonzero) digits is 131220, while the sum is 46.

The spelling of 200021999950 in words is "two hundred billion, twenty-one million, nine hundred ninety-nine thousand, nine hundred fifty".