22521513642 has 16 divisors (see below), whose sum is σ = 45367079520. Its totient is φ = 7453162512.

The previous prime is 22521513613. The next prime is 22521513649. The reversal of 22521513642 is 24631512522.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (22521513649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13501273 + ... + 13502940.

It is an arithmetic number, because the mean of its divisors is an integer number (2835442470).

Almost surely, 2^22521513642 is an apocalyptic number.

22521513642 is an abundant number, since it is smaller than the sum of its proper divisors (22845565878).

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

22521513642 is a wasteful number, since it uses less digits than its factorization.

22521513642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27004357.

The product of its digits is 28800, while the sum is 33.

The spelling of 22521513642 in words is "twenty-two billion, five hundred twenty-one million, five hundred thirteen thousand, six hundred forty-two".