12023035551 has 16 divisors (see below), whose sum is σ = 17842272000. Its totient is φ = 8001691704.

The previous prime is 12023035547. The next prime is 12023035561. The reversal of 12023035551 is 15553032021.

It is a happy number.

It is not a de Polignac number, because 12023035551 - 2² = 12023035547 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12023035501) 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, 363451 + ... + 395148.

It is an arithmetic number, because the mean of its divisors is an integer number (1115142000).

Almost surely, 2^12023035551 is an apocalyptic number.

12023035551 is a deficient number, since it is larger than the sum of its proper divisors (5819236449).

12023035551 is an equidigital number, since it uses as much as digits as its factorization.

12023035551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 759195 (or 759189 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

Adding to 12023035551 its reverse (15553032021), we get a palindrome (27576067572).

The spelling of 12023035551 in words is "twelve billion, twenty-three million, thirty-five thousand, five hundred fifty-one".