22639976640 has 168 divisors, whose sum is σ = 78747945120. Its totient is φ = 5969424384.

The previous prime is 22639976629. The next prime is 22639976647. The reversal of 22639976640 is 4667993622.

It is not an unprimeable number, because it can be changed into a prime (22639976647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 212157 + ... + 300483.

Almost surely, 2^22639976640 is an apocalyptic number.

22639976640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22639976640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39373972560).

22639976640 is an abundant number, since it is smaller than the sum of its proper divisors (56107968480).

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

22639976640 is a wasteful number, since it uses less digits than its factorization.

22639976640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88439 (or 88426 counting only the distinct ones).

The product of its (nonzero) digits is 5878656, while the sum is 54.

The spelling of 22639976640 in words is "twenty-two billion, six hundred thirty-nine million, nine hundred seventy-six thousand, six hundred forty".