12044521623 has 4 divisors (see below), whose sum is σ = 16059362168. Its totient is φ = 8029681080.

The previous prime is 12044521597. The next prime is 12044521627. The reversal of 12044521623 is 32612544021.

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

It is not a de Polignac number, because 12044521623 - 2¹⁰ = 12044520599 is a prime.

It is a super-2 number, since 2×12044521623² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12044521627) 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, 2007420268 + ... + 2007420273.

It is an arithmetic number, because the mean of its divisors is an integer number (4014840542).

Almost surely, 2^12044521623 is an apocalyptic number.

12044521623 is a deficient number, since it is larger than the sum of its proper divisors (4014840545).

12044521623 is an equidigital number, since it uses as much as digits as its factorization.

12044521623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4014840544.

The product of its (nonzero) digits is 11520, while the sum is 30.

The spelling of 12044521623 in words is "twelve billion, forty-four million, five hundred twenty-one thousand, six hundred twenty-three".