22001465892 has 144 divisors (see below), whose sum is σ = 63885786048. Its totient is φ = 5855109120.

The previous prime is 22001465887. The next prime is 22001465953. The reversal of 22001465892 is 29856410022.

It is a self number, because there is not a number n which added to its sum of digits gives 22001465892.

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, 958267 + ... + 980957.

It is an arithmetic number, because the mean of its divisors is an integer number (443651292).

Almost surely, 2^22001465892 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 22001465892, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31942893024).

22001465892 is an abundant number, since it is smaller than the sum of its proper divisors (41884320156).

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

22001465892 is a wasteful number, since it uses less digits than its factorization.

22001465892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22826 (or 22817 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The spelling of 22001465892 in words is "twenty-two billion, one million, four hundred sixty-five thousand, eight hundred ninety-two".