209306075146 has 24 divisors (see below), whose sum is σ = 365234593536. Its totient is φ = 89698465080.

The previous prime is 209306075141. The next prime is 209306075183. The reversal of 209306075146 is 641570603902.

It is not an unprimeable number, because it can be changed into a prime (209306075141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3121545 + ... + 3187891.

It is an arithmetic number, because the mean of its divisors is an integer number (15218108064).

Almost surely, 2^209306075146 is an apocalyptic number.

209306075146 is a deficient number, since it is larger than the sum of its proper divisors (155928518390).

209306075146 is a wasteful number, since it uses less digits than its factorization.

209306075146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98554 (or 98547 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 43.

The spelling of 209306075146 in words is "two hundred nine billion, three hundred six million, seventy-five thousand, one hundred forty-six".