22045544723 has 4 divisors (see below), whose sum is σ = 22046922840. Its totient is φ = 22044166608.

The previous prime is 22045544711. The next prime is 22045544737. The reversal of 22045544723 is 32744554022.

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 22045544723 - 2⁴ = 22045544707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22045544743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 664778 + ... + 697151.

It is an arithmetic number, because the mean of its divisors is an integer number (5511730710).

Almost surely, 2^22045544723 is an apocalyptic number.

22045544723 is a deficient number, since it is larger than the sum of its proper divisors (1378117).

22045544723 is a wasteful number, since it uses less digits than its factorization.

22045544723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1378116.

The product of its (nonzero) digits is 268800, while the sum is 38.

The spelling of 22045544723 in words is "twenty-two billion, forty-five million, five hundred forty-four thousand, seven hundred twenty-three".