199461867650 has 12 divisors (see below), whose sum is σ = 370999073922. Its totient is φ = 79784747040.

The previous prime is 199461867637. The next prime is 199461867679. The reversal of 199461867650 is 56768164991.

199461867650 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 175133043121 + 24328824529 = 418489^2 + 155977^2 .

It is a super-2 number, since 2×199461867650² (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, 1994618627 + ... + 1994618726.

Almost surely, 2^199461867650 is an apocalyptic number.

199461867650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

199461867650 is a deficient number, since it is larger than the sum of its proper divisors (171537206272).

199461867650 is a wasteful number, since it uses less digits than its factorization.

199461867650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3989237365 (or 3989237360 counting only the distinct ones).

The product of its (nonzero) digits is 19595520, while the sum is 62.

The spelling of 199461867650 in words is "one hundred ninety-nine billion, four hundred sixty-one million, eight hundred sixty-seven thousand, six hundred fifty".