211653665011 has 8 divisors (see below), whose sum is σ = 218489522048. Its totient is φ = 204818328000.

The previous prime is 211653665009. The next prime is 211653665017. The reversal of 211653665011 is 110566356112.

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 211653665011 - 2¹ = 211653665009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211653665017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 803701 + ... + 1034041.

It is an arithmetic number, because the mean of its divisors is an integer number (27311190256).

Almost surely, 2^211653665011 is an apocalyptic number.

211653665011 is a deficient number, since it is larger than the sum of its proper divisors (6835857037).

211653665011 is a wasteful number, since it uses less digits than its factorization.

211653665011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260013.

The product of its (nonzero) digits is 32400, while the sum is 37.

The spelling of 211653665011 in words is "two hundred eleven billion, six hundred fifty-three million, six hundred sixty-five thousand, eleven".