22780357688 has 64 divisors (see below), whose sum is σ = 48166272000. Its totient is φ = 10006732800.

The previous prime is 22780357651. The next prime is 22780357693. The reversal of 22780357688 is 88675308722.

It is a happy number.

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, 2092403 + ... + 2103261.

It is an arithmetic number, because the mean of its divisors is an integer number (752598000).

Almost surely, 2^22780357688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22780357688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24083136000).

22780357688 is an abundant number, since it is smaller than the sum of its proper divisors (25385914312).

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

22780357688 is a wasteful number, since it uses less digits than its factorization.

22780357688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11676 (or 11672 counting only the distinct ones).

The product of its (nonzero) digits is 9031680, while the sum is 56.

The spelling of 22780357688 in words is "twenty-two billion, seven hundred eighty million, three hundred fifty-seven thousand, six hundred eighty-eight".