22138406403 has 8 divisors (see below), whose sum is σ = 29519804688. Its totient is φ = 14757972864.

The previous prime is 22138406401. The next prime is 22138406449. The reversal of 22138406403 is 30460483122.

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

It is not a de Polignac number, because 22138406403 - 2¹ = 22138406401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22138406401) 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, 185826 + ... + 280727.

It is an arithmetic number, because the mean of its divisors is an integer number (3689975586).

Almost surely, 2^22138406403 is an apocalyptic number.

22138406403 is a deficient number, since it is larger than the sum of its proper divisors (7381398285).

22138406403 is a wasteful number, since it uses less digits than its factorization.

22138406403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482373.

The product of its (nonzero) digits is 27648, while the sum is 33.

Adding to 22138406403 its reverse (30460483122), we get a palindrome (52598889525).

The spelling of 22138406403 in words is "twenty-two billion, one hundred thirty-eight million, four hundred six thousand, four hundred three".