211664180093 has 4 divisors (see below), whose sum is σ = 211670696160. Its totient is φ = 211657664028.

The previous prime is 211664180027. The next prime is 211664180107. The reversal of 211664180093 is 390081466112.

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 not a de Polignac number, because 211664180093 - 2¹⁴ = 211664163709 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 211664180093.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211664180593) 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, 3209063 + ... + 3274356.

It is an arithmetic number, because the mean of its divisors is an integer number (52917674040).

Almost surely, 2^211664180093 is an apocalyptic number.

It is an amenable number.

211664180093 is a deficient number, since it is larger than the sum of its proper divisors (6516067).

211664180093 is an equidigital number, since it uses as much as digits as its factorization.

211664180093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6516066.

The product of its (nonzero) digits is 62208, while the sum is 41.

The spelling of 211664180093 in words is "two hundred eleven billion, six hundred sixty-four million, one hundred eighty thousand, ninety-three".