199959003950 has 96 divisors (see below), whose sum is σ = 408262083840. Its totient is φ = 72535449600.

The previous prime is 199959003949. The next prime is 199959003961. The reversal of 199959003950 is 59300959991.

It is a super-2 number, since 2×199959003950² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 199959003950.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6123266 + ... + 6155834.

It is an arithmetic number, because the mean of its divisors is an integer number (4252730040).

Almost surely, 2^199959003950 is an apocalyptic number.

199959003950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

199959003950 is an abundant number, since it is smaller than the sum of its proper divisors (208303079890).

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

199959003950 is a wasteful number, since it uses less digits than its factorization.

199959003950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32862 (or 32857 counting only the distinct ones).

The product of its (nonzero) digits is 4428675, while the sum is 59.

The spelling of 199959003950 in words is "one hundred ninety-nine billion, nine hundred fifty-nine million, three thousand, nine hundred fifty".