211684797005 has 16 divisors (see below), whose sum is σ = 277135210944. Its totient is φ = 153941153280.

The previous prime is 211684797001. The next prime is 211684797019. The reversal of 211684797005 is 500797486112.

It is a happy number.

It is not a de Polignac number, because 211684797005 - 2² = 211684797001 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 (211684797001) 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, 643994 + ... + 915476.

It is an arithmetic number, because the mean of its divisors is an integer number (17320950684).

Almost surely, 2^211684797005 is an apocalyptic number.

It is an amenable number.

211684797005 is a deficient number, since it is larger than the sum of its proper divisors (65450413939).

211684797005 is a wasteful number, since it uses less digits than its factorization.

211684797005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285676.

The product of its (nonzero) digits is 846720, while the sum is 50.

The spelling of 211684797005 in words is "two hundred eleven billion, six hundred eighty-four million, seven hundred ninety-seven thousand, five".