211680604801 has 4 divisors (see below), whose sum is σ = 211681610752. Its totient is φ = 211679598852.

The previous prime is 211680604787. The next prime is 211680604823. The reversal of 211680604801 is 108406086112.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 211680604801 - 2³¹ = 209533121153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211680604501) 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, 53361 + ... + 652846.

It is an arithmetic number, because the mean of its divisors is an integer number (52920402688).

Almost surely, 2^211680604801 is an apocalyptic number.

It is an amenable number.

211680604801 is a deficient number, since it is larger than the sum of its proper divisors (1005951).

211680604801 is an equidigital number, since it uses as much as digits as its factorization.

211680604801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1005950.

The product of its (nonzero) digits is 18432, while the sum is 37.

The spelling of 211680604801 in words is "two hundred eleven billion, six hundred eighty million, six hundred four thousand, eight hundred one".