12009500146 has 16 divisors (see below), whose sum is σ = 20590914240. Its totient is φ = 5146128720.

The previous prime is 12009500137. The next prime is 12009500197. The reversal of 12009500146 is 64100590021.

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, 31636 + ... + 158176.

It is an arithmetic number, because the mean of its divisors is an integer number (1286932140).

Almost surely, 2^12009500146 is an apocalyptic number.

12009500146 is a deficient number, since it is larger than the sum of its proper divisors (8581414094).

12009500146 is a wasteful number, since it uses less digits than its factorization.

12009500146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133329.

The product of its (nonzero) digits is 2160, while the sum is 28.

The spelling of 12009500146 in words is "twelve billion, nine million, five hundred thousand, one hundred forty-six".