22491048643 has 16 divisors (see below), whose sum is σ = 26074483200. Its totient is φ = 19000396800.

The previous prime is 22491048583. The next prime is 22491048667. The reversal of 22491048643 is 34684019422.

It is not a de Polignac number, because 22491048643 - 2⁹ = 22491048131 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22491048643.

It is not an unprimeable number, because it can be changed into a prime (22491048143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2222008 + ... + 2232106.

It is an arithmetic number, because the mean of its divisors is an integer number (1629655200).

Almost surely, 2^22491048643 is an apocalyptic number.

22491048643 is a deficient number, since it is larger than the sum of its proper divisors (3583434557).

22491048643 is a wasteful number, since it uses less digits than its factorization.

22491048643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14658.

The product of its (nonzero) digits is 331776, while the sum is 43.

The spelling of 22491048643 in words is "twenty-two billion, four hundred ninety-one million, forty-eight thousand, six hundred forty-three".