22445578890 has 96 divisors (see below), whose sum is σ = 70618728960. Its totient is φ = 4828626432.

The previous prime is 22445578889. The next prime is 22445578927. The reversal of 22445578890 is 9887554422.

22445578890 is a `hidden beast` number, since 2 + 2 + 4 + 4 + 557 + 8 + 89 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1037170 + ... + 1058589.

It is an arithmetic number, because the mean of its divisors is an integer number (735611760).

Almost surely, 2^22445578890 is an apocalyptic number.

22445578890 is an abundant number, since it is smaller than the sum of its proper divisors (48173150070).

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

22445578890 is a wasteful number, since it uses less digits than its factorization.

22445578890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2095796 (or 2095793 counting only the distinct ones).

The product of its (nonzero) digits is 6451200, while the sum is 54.

The spelling of 22445578890 in words is "twenty-two billion, four hundred forty-five million, five hundred seventy-eight thousand, eight hundred ninety".