22723452049 has 3 divisors (see below), whose sum is σ = 22723602793. Its totient is φ = 22723301306.

The previous prime is 22723451977. The next prime is 22723452053. The reversal of 22723452049 is 94025432722.

The square root of 22723452049 is 150743.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 22723452049 - 2⁹ = 22723451537 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22723452649) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 75372 + ... + 226114.

Almost surely, 2^22723452049 is an apocalyptic number.

22723452049 is the 150743-rd square number.

22723452049 is the 75372-nd centered octagonal number.

It is an amenable number.

22723452049 is a deficient number, since it is larger than the sum of its proper divisors (150744).

22723452049 is an frugal number, since it uses more digits than its factorization.

22723452049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301486 (or 150743 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 40.

The spelling of 22723452049 in words is "twenty-two billion, seven hundred twenty-three million, four hundred fifty-two thousand, forty-nine".