211115066407 has 6 divisors (see below), whose sum is σ = 245582832408. Its totient is φ = 180955771164.

The previous prime is 211115066363. The next prime is 211115066471. The reversal of 211115066407 is 704660511112.

It is a de Polignac number, because none of the positive numbers 2^k-211115066407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211115066497) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2154235323 + ... + 2154235420.

It is an arithmetic number, because the mean of its divisors is an integer number (40930472068).

Almost surely, 2^211115066407 is an apocalyptic number.

211115066407 is a deficient number, since it is larger than the sum of its proper divisors (34467766001).

211115066407 is an equidigital number, since it uses as much as digits as its factorization.

211115066407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4308470757 (or 4308470750 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 34.

Adding to 211115066407 its reverse (704660511112), we get a palindrome (915775577519).

The spelling of 211115066407 in words is "two hundred eleven billion, one hundred fifteen million, sixty-six thousand, four hundred seven".