199652075218 has 12 divisors (see below), whose sum is σ = 305985566142. Its totient is φ = 97702077200.

The previous prime is 199652075197. The next prime is 199652075243. The reversal of 199652075218 is 812570256991.

It can be written as a sum of positive squares in only one way, i.e., 188558298289 + 11093776929 = 434233^2 + 105327^2 .

It is a super-2 number, since 2×199652075218² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22590883 + ... + 22599718.

Almost surely, 2^199652075218 is an apocalyptic number.

199652075218 is a deficient number, since it is larger than the sum of its proper divisors (106333490924).

199652075218 is an equidigital number, since it uses as much as digits as its factorization.

199652075218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45190697 (or 45190650 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 55.

The spelling of 199652075218 in words is "one hundred ninety-nine billion, six hundred fifty-two million, seventy-five thousand, two hundred eighteen".