22681384550 has 48 divisors (see below), whose sum is σ = 47001848832. Its totient is φ = 8072282400.

The previous prime is 22681384549. The next prime is 22681384559. The reversal of 22681384550 is 5548318622.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22681384559) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 412862 + ... + 464561.

It is an arithmetic number, because the mean of its divisors is an integer number (979205184).

Almost surely, 2^22681384550 is an apocalyptic number.

22681384550 is an abundant number, since it is smaller than the sum of its proper divisors (24320464282).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22681384550 is a wasteful number, since it uses less digits than its factorization.

22681384550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 877493 (or 877488 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 44.

The spelling of 22681384550 in words is "twenty-two billion, six hundred eighty-one million, three hundred eighty-four thousand, five hundred fifty".