22643437774 has 4 divisors (see below), whose sum is σ = 33965156664. Its totient is φ = 11321718886.

The previous prime is 22643437757. The next prime is 22643437783. The reversal of 22643437774 is 47773434622.

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

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5660859442 + ... + 5660859445.

It is an arithmetic number, because the mean of its divisors is an integer number (8491289166).

Almost surely, 2^22643437774 is an apocalyptic number.

22643437774 is a deficient number, since it is larger than the sum of its proper divisors (11321718890).

22643437774 is a wasteful number, since it uses less digits than its factorization.

22643437774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11321718889.

The product of its digits is 4741632, while the sum is 49.

The spelling of 22643437774 in words is "twenty-two billion, six hundred forty-three million, four hundred thirty-seven thousand, seven hundred seventy-four".