22515400423 has 8 divisors (see below), whose sum is σ = 23855640480. Its totient is φ = 21176916480.

The previous prime is 22515400399. The next prime is 22515400489. The reversal of 22515400423 is 32400451522.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22515400423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22515400391 and 22515400400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22515400823) 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, 412578 + ... + 463951.

It is an arithmetic number, because the mean of its divisors is an integer number (2981955060).

Almost surely, 2^22515400423 is an apocalyptic number.

22515400423 is a deficient number, since it is larger than the sum of its proper divisors (1340240057).

22515400423 is a wasteful number, since it uses less digits than its factorization.

22515400423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 878057.

The product of its (nonzero) digits is 9600, while the sum is 28.

Adding to 22515400423 its reverse (32400451522), we get a palindrome (54915851945).

The spelling of 22515400423 in words is "twenty-two billion, five hundred fifteen million, four hundred thousand, four hundred twenty-three".