22400001644 has 12 divisors (see below), whose sum is σ = 39604127304. Its totient is φ = 11084536704.

The previous prime is 22400001619. The next prime is 22400001647. The reversal of 22400001644 is 44610000422.

22400001644 is a modest number, since divided by 1644 gives 224 as remainder.

It is not an unprimeable number, because it can be changed into a prime (22400001647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28865594 + ... + 28866369.

It is an arithmetic number, because the mean of its divisors is an integer number (3300343942).

Almost surely, 2^22400001644 is an apocalyptic number.

It is an amenable number.

22400001644 is a deficient number, since it is larger than the sum of its proper divisors (17204125660).

22400001644 is a wasteful number, since it uses less digits than its factorization.

22400001644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57732064 (or 57732062 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The spelling of 22400001644 in words is "twenty-two billion, four hundred million, one thousand, six hundred forty-four".