211662015161 has 8 divisors (see below), whose sum is σ = 215139646848. Its totient is φ = 208184634000.

The previous prime is 211662015137. The next prime is 211662015193. The reversal of 211662015161 is 161510266112.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211662015161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211662015101) 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, 2484176 + ... + 2567966.

It is an arithmetic number, because the mean of its divisors is an integer number (26892455856).

Almost surely, 2^211662015161 is an apocalyptic number.

It is an amenable number.

211662015161 is a deficient number, since it is larger than the sum of its proper divisors (3477631687).

211662015161 is an equidigital number, since it uses as much as digits as its factorization.

211662015161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125263.

The product of its (nonzero) digits is 4320, while the sum is 32.

The spelling of 211662015161 in words is "two hundred eleven billion, six hundred sixty-two million, fifteen thousand, one hundred sixty-one".