12322544551 has 4 divisors (see below), whose sum is σ = 12322945600. Its totient is φ = 12322143504.

The previous prime is 12322544543. The next prime is 12322544581. The reversal of 12322544551 is 15544522321.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15544522321 = 4271 ⋅3639551.

It is a cyclic number.

It is not a de Polignac number, because 12322544551 - 2³ = 12322544543 is a prime.

It is a super-2 number, since 2×12322544551² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12322544581) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150231 + ... + 217288.

It is an arithmetic number, because the mean of its divisors is an integer number (3080736400).

Almost surely, 2^12322544551 is an apocalyptic number.

12322544551 is a deficient number, since it is larger than the sum of its proper divisors (401049).

12322544551 is an equidigital number, since it uses as much as digits as its factorization.

12322544551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401048.

The product of its digits is 48000, while the sum is 34.

The spelling of 12322544551 in words is "twelve billion, three hundred twenty-two million, five hundred forty-four thousand, five hundred fifty-one".