22400400423 has 8 divisors (see below), whose sum is σ = 29872582128. Its totient is φ = 14930909504.

The previous prime is 22400400409. The next prime is 22400400427. The reversal of 22400400423 is 32400400422.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22400400423 - 2⁸ = 22400400167 is a prime.

It is a super-2 number, since 2×22400400423² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22400400423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22400400427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 653190 + ... + 686627.

It is an arithmetic number, because the mean of its divisors is an integer number (3734072766).

Almost surely, 2^22400400423 is an apocalyptic number.

22400400423 is a deficient number, since it is larger than the sum of its proper divisors (7472181705).

22400400423 is a wasteful number, since it uses less digits than its factorization.

22400400423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1345393.

The product of its (nonzero) digits is 1536, while the sum is 21.

Adding to 22400400423 its reverse (32400400422), we get a palindrome (54800800845).

Subtracting 22400400423 from its reverse (32400400422), we obtain a palindrome (9999999999).

The spelling of 22400400423 in words is "twenty-two billion, four hundred million, four hundred thousand, four hundred twenty-three".