211347916289 has 4 divisors (see below), whose sum is σ = 218165591040. Its totient is φ = 204530241540.

The previous prime is 211347916277. The next prime is 211347916291. The reversal of 211347916289 is 982619743112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211347916289 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 211347916289.

It is not an unprimeable number, because it can be changed into a prime (211347976289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3408837329 + ... + 3408837390.

It is an arithmetic number, because the mean of its divisors is an integer number (54541397760).

Almost surely, 2^211347916289 is an apocalyptic number.

It is an amenable number.

211347916289 is a deficient number, since it is larger than the sum of its proper divisors (6817674751).

211347916289 is an equidigital number, since it uses as much as digits as its factorization.

211347916289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6817674750.

The product of its digits is 1306368, while the sum is 53.

The spelling of 211347916289 in words is "two hundred eleven billion, three hundred forty-seven million, nine hundred sixteen thousand, two hundred eighty-nine".