16161002443 has 4 divisors (see below), whose sum is σ = 16205038240. Its totient is φ = 16116966648.

The previous prime is 16161002441. The next prime is 16161002453. The reversal of 16161002443 is 34420016161.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16161002443 - 2¹ = 16161002441 is a prime.

It is a super-2 number, since 2×16161002443² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16161002441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22017348 + ... + 22018081.

It is an arithmetic number, because the mean of its divisors is an integer number (4051259560).

Almost surely, 2^16161002443 is an apocalyptic number.

16161002443 is a deficient number, since it is larger than the sum of its proper divisors (44035797).

16161002443 is an equidigital number, since it uses as much as digits as its factorization.

16161002443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44035796.

The product of its (nonzero) digits is 3456, while the sum is 28.

The spelling of 16161002443 in words is "sixteen billion, one hundred sixty-one million, two thousand, four hundred forty-three".