16105736623 has 4 divisors (see below), whose sum is σ = 16541026840. Its totient is φ = 15670446408.

The previous prime is 16105736611. The next prime is 16105736629. The reversal of 16105736623 is 32663750161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32663750161 = 7 ⋅4666250023.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16105736623 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 (16105736629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217645053 + ... + 217645126.

It is an arithmetic number, because the mean of its divisors is an integer number (4135256710).

Almost surely, 2^16105736623 is an apocalyptic number.

16105736623 is a deficient number, since it is larger than the sum of its proper divisors (435290217).

16105736623 is an equidigital number, since it uses as much as digits as its factorization.

16105736623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435290216.

The product of its (nonzero) digits is 136080, while the sum is 40.

The spelling of 16105736623 in words is "sixteen billion, one hundred five million, seven hundred thirty-six thousand, six hundred twenty-three".