209291092912 has 40 divisors (see below), whose sum is σ = 448595788032. Its totient is φ = 93792417600.

The previous prime is 209291092909. The next prime is 209291092973. The reversal of 209291092912 is 219290192902.

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, 8361828 + ... + 8386819.

Almost surely, 2^209291092912 is an apocalyptic number.

209291092912 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

209291092912 is an abundant number, since it is smaller than the sum of its proper divisors (239304695120).

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

209291092912 is a wasteful number, since it uses less digits than its factorization.

209291092912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16748737 (or 16748731 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 46.

The spelling of 209291092912 in words is "two hundred nine billion, two hundred ninety-one million, ninety-two thousand, nine hundred twelve".