16181070422669 has 4 divisors (see below), whose sum is σ = 16202333328060. Its totient is φ = 16159807517280.

The previous prime is 16181070422641. The next prime is 16181070422677. The reversal of 16181070422669 is 96622407018161.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 17092424644 + 16163977998025 = 130738^2 + 4020445^2 .

It is a cyclic number.

It is not a de Polignac number, because 16181070422669 - 2²⁸ = 16180801987213 is a prime.

It is a super-2 number, since 2×16181070422669² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16181070422669.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16181070452669) 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, 10631451554 + ... + 10631453075.

It is an arithmetic number, because the mean of its divisors is an integer number (4050583332015).

Almost surely, 2^{16181070422669} is an apocalyptic number.

It is an amenable number.

16181070422669 is a deficient number, since it is larger than the sum of its proper divisors (21262905391).

16181070422669 is an equidigital number, since it uses as much as digits as its factorization.

16181070422669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21262905390.

The product of its (nonzero) digits is 1741824, while the sum is 53.

The spelling of 16181070422669 in words is "sixteen trillion, one hundred eighty-one billion, seventy million, four hundred twenty-two thousand, six hundred sixty-nine".