12261136823 has 8 divisors (see below), whose sum is σ = 13420766016. Its totient is φ = 11132431200.

The previous prime is 12261136819. The next prime is 12261136843. The reversal of 12261136823 is 32863116221.

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

It is a cyclic number.

It is not a de Polignac number, because 12261136823 - 2² = 12261136819 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12261136843) 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 7 ways as a sum of consecutive naturals, for example, 7730063 + ... + 7731648.

It is an arithmetic number, because the mean of its divisors is an integer number (1677595752).

Almost surely, 2^12261136823 is an apocalyptic number.

12261136823 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12261136823 is a deficient number, since it is larger than the sum of its proper divisors (1159629193).

12261136823 is a wasteful number, since it uses less digits than its factorization.

12261136823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15461785.

The product of its digits is 20736, while the sum is 35.

The spelling of 12261136823 in words is "twelve billion, two hundred sixty-one million, one hundred thirty-six thousand, eight hundred twenty-three".