22789789890 has 128 divisors (see below), whose sum is σ = 65666764800. Its totient is φ = 4949015808.

The previous prime is 22789789889. The next prime is 22789789921. The reversal of 22789789890 is 9898798722.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 703837 + ... + 735503.

It is an arithmetic number, because the mean of its divisors is an integer number (513021600).

Almost surely, 2^22789789890 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22789789890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32833382400).

22789789890 is an abundant number, since it is smaller than the sum of its proper divisors (42876974910).

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

22789789890 is a wasteful number, since it uses less digits than its factorization.

22789789890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31856.

The product of its (nonzero) digits is 73156608, while the sum is 69.

The spelling of 22789789890 in words is "twenty-two billion, seven hundred eighty-nine million, seven hundred eighty-nine thousand, eight hundred ninety".