22642220640 has 96 divisors (see below), whose sum is σ = 76809400416. Its totient is φ = 5573468160.

The previous prime is 22642220617. The next prime is 22642220651. The reversal of 22642220640 is 4602224622.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 22642220598 and 22642220607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1808041 + ... + 1820520.

It is an arithmetic number, because the mean of its divisors is an integer number (800097921).

Almost surely, 2^22642220640 is an apocalyptic number.

22642220640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22642220640 is an abundant number, since it is smaller than the sum of its proper divisors (54167179776).

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

22642220640 is a wasteful number, since it uses less digits than its factorization.

22642220640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3628592 (or 3628584 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 30.

The spelling of 22642220640 in words is "twenty-two billion, six hundred forty-two million, two hundred twenty thousand, six hundred forty".