16166959823 has 8 divisors (see below), whose sum is σ = 19072542720. Its totient is φ = 13410381240.

The previous prime is 16166959811. The next prime is 16166959841. The reversal of 16166959823 is 32895966161.

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 16166959823 - 2⁴ = 16166959807 is a prime.

It is a super-2 number, since 2×16166959823² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16166959883) 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, 37250843 + ... + 37251276.

It is an arithmetic number, because the mean of its divisors is an integer number (2384067840).

Almost surely, 2^16166959823 is an apocalyptic number.

16166959823 is a deficient number, since it is larger than the sum of its proper divisors (2905582897).

16166959823 is an equidigital number, since it uses as much as digits as its factorization.

16166959823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74502157.

The product of its digits is 4199040, while the sum is 56.

The spelling of 16166959823 in words is "sixteen billion, one hundred sixty-six million, nine hundred fifty-nine thousand, eight hundred twenty-three".