211680344899 has 8 divisors (see below), whose sum is σ = 213799800960. Its totient is φ = 209561352000.

The previous prime is 211680344767. The next prime is 211680344933. The reversal of 211680344899 is 998443086112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 211680344899 - 2⁹ = 211680344387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211680344399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 842319 + ... + 1064359.

It is an arithmetic number, because the mean of its divisors is an integer number (26724975120).

Almost surely, 2^211680344899 is an apocalyptic number.

211680344899 is a deficient number, since it is larger than the sum of its proper divisors (2119456061).

211680344899 is a wasteful number, since it uses less digits than its factorization.

211680344899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231581.

The product of its (nonzero) digits is 2985984, while the sum is 55.

The spelling of 211680344899 in words is "two hundred eleven billion, six hundred eighty million, three hundred forty-four thousand, eight hundred ninety-nine".