211490216165 has 8 divisors (see below), whose sum is σ = 258089755680. Its totient is φ = 166324508752.

The previous prime is 211490216149. The next prime is 211490216219. The reversal of 211490216165 is 561612094112.

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 211490216165 - 2⁴ = 211490216149 is a prime.

It is a super-2 number, since 2×211490216165² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 358457699 + ... + 358458288.

It is an arithmetic number, because the mean of its divisors is an integer number (32261219460).

Almost surely, 2^211490216165 is an apocalyptic number.

It is an amenable number.

211490216165 is a deficient number, since it is larger than the sum of its proper divisors (46599539515).

211490216165 is an equidigital number, since it uses as much as digits as its factorization.

211490216165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716916051.

The product of its (nonzero) digits is 25920, while the sum is 38.

The spelling of 211490216165 in words is "two hundred eleven billion, four hundred ninety million, two hundred sixteen thousand, one hundred sixty-five".