2161766503223 has 8 divisors (see below), whose sum is σ = 2173011654000. Its totient is φ = 2150521809408.

The previous prime is 2161766503219. The next prime is 2161766503289. The reversal of 2161766503223 is 3223056671612.

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 2161766503223 - 2² = 2161766503219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2161766503213) 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, 13699628 + ... + 13856526.

It is an arithmetic number, because the mean of its divisors is an integer number (271626456750).

Almost surely, 2^{2161766503223} is an apocalyptic number.

2161766503223 is a deficient number, since it is larger than the sum of its proper divisors (11245150777).

2161766503223 is a wasteful number, since it uses less digits than its factorization.

2161766503223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228481.

The product of its (nonzero) digits is 544320, while the sum is 44.

The spelling of 2161766503223 in words is "two trillion, one hundred sixty-one billion, seven hundred sixty-six million, five hundred three thousand, two hundred twenty-three".