209229413811 has 16 divisors (see below), whose sum is σ = 305910560640. Its totient is φ = 126148677120.

The previous prime is 209229413797. The next prime is 209229413839. The reversal of 209229413811 is 118314922902.

It is not a de Polignac number, because 209229413811 - 2⁵ = 209229413779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (209229413611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16419241 + ... + 16431978.

It is an arithmetic number, because the mean of its divisors is an integer number (19119410040).

Almost surely, 2^209229413811 is an apocalyptic number.

209229413811 is a deficient number, since it is larger than the sum of its proper divisors (96681146829).

209229413811 is a wasteful number, since it uses less digits than its factorization.

209229413811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32851426.

The product of its (nonzero) digits is 62208, while the sum is 42.

The spelling of 209229413811 in words is "two hundred nine billion, two hundred twenty-nine million, four hundred thirteen thousand, eight hundred eleven".