22151323455 has 16 divisors (see below), whose sum is σ = 35455256064. Its totient is φ = 11809659680.

The previous prime is 22151323399. The next prime is 22151323457. The reversal of 22151323455 is 55432315122.

It is not a de Polignac number, because 22151323455 - 2⁹ = 22151322943 is a prime.

It is a super-2 number, since 2×22151323455² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22151323457) 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 in 15 ways as a sum of consecutive naturals, for example, 231699 + ... + 313028.

It is an arithmetic number, because the mean of its divisors is an integer number (2215953504).

Almost surely, 2^22151323455 is an apocalyptic number.

22151323455 is a deficient number, since it is larger than the sum of its proper divisors (13303932609).

22151323455 is a wasteful number, since it uses less digits than its factorization.

22151323455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547446.

The product of its digits is 36000, while the sum is 33.

Adding to 22151323455 its reverse (55432315122), we get a palindrome (77583638577).

The spelling of 22151323455 in words is "twenty-two billion, one hundred fifty-one million, three hundred twenty-three thousand, four hundred fifty-five".