22467911449 has 3 divisors (see below), whose sum is σ = 22468061343. Its totient is φ = 22467761556.

The previous prime is 22467911393. The next prime is 22467911461. The reversal of 22467911449 is 94411976422.

The square root of 22467911449 is 149893.

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, and also an emirpimes, since its reverse is a distinct semiprime: 94411976422 = 2 ⋅47205988211.

It can be written as a sum of positive squares in only one way, i.e., 20151222025 + 2316689424 = 141955^2 + 48132^2 .

It is not a de Polignac number, because 22467911449 - 2⁹ = 22467910937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22467911549) 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, 74947 + ... + 224839.

It is an arithmetic number, because the mean of its divisors is an integer number (7489353781).

Almost surely, 2^22467911449 is an apocalyptic number.

22467911449 is the 149893-rd square number.

22467911449 is the 74947-th centered octagonal number.

It is an amenable number.

22467911449 is a deficient number, since it is larger than the sum of its proper divisors (149894).

22467911449 is an frugal number, since it uses more digits than its factorization.

22467911449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299786 (or 149893 counting only the distinct ones).

The product of its digits is 870912, while the sum is 49.

Multiplying 22467911449 by its sum of digits (49), we get a square (1100927661001 = 1049251²).

The spelling of 22467911449 in words is "twenty-two billion, four hundred sixty-seven million, nine hundred eleven thousand, four hundred forty-nine".