12261423628 has 6 divisors (see below), whose sum is σ = 21457491356. Its totient is φ = 6130711812.

The previous prime is 12261423623. The next prime is 12261423667. The reversal of 12261423628 is 82632416221.

It is not an unprimeable number, because it can be changed into a prime (12261423623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1532677950 + ... + 1532677957.

Almost surely, 2^12261423628 is an apocalyptic number.

It is an amenable number.

12261423628 is a deficient number, since it is larger than the sum of its proper divisors (9196067728).

12261423628 is a wasteful number, since it uses less digits than its factorization.

12261423628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3065355911 (or 3065355909 counting only the distinct ones).

The product of its digits is 55296, while the sum is 37.

Adding to 12261423628 its reverse (82632416221), we get a palindrome (94893839849).

The spelling of 12261423628 in words is "twelve billion, two hundred sixty-one million, four hundred twenty-three thousand, six hundred twenty-eight".