22451031644 has 6 divisors (see below), whose sum is σ = 39289305384. Its totient is φ = 11225515820.

The previous prime is 22451031641. The next prime is 22451031661. The reversal of 22451031644 is 44613015422.

It is a self number, because there is not a number n which added to its sum of digits gives 22451031644.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22451031641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2806378952 + ... + 2806378959.

It is an arithmetic number, because the mean of its divisors is an integer number (6548217564).

Almost surely, 2^22451031644 is an apocalyptic number.

It is an amenable number.

22451031644 is a deficient number, since it is larger than the sum of its proper divisors (16838273740).

22451031644 is a wasteful number, since it uses less digits than its factorization.

22451031644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5612757915 (or 5612757913 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

The spelling of 22451031644 in words is "twenty-two billion, four hundred fifty-one million, thirty-one thousand, six hundred forty-four".