199506071212 has 24 divisors (see below), whose sum is σ = 399021709856. Its totient is φ = 85500551808.

The previous prime is 199506071159. The next prime is 199506071243. The reversal of 199506071212 is 212170605991.

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, 1975498 + ... + 2074030.

Almost surely, 2^199506071212 is an apocalyptic number.

It is an amenable number.

199506071212 is an abundant number, since it is smaller than the sum of its proper divisors (199515638644).

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

199506071212 is a wasteful number, since it uses less digits than its factorization.

199506071212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170857 (or 170855 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 43.

The spelling of 199506071212 in words is "one hundred ninety-nine billion, five hundred six million, seventy-one thousand, two hundred twelve".