12126516755 has 16 divisors (see below), whose sum is σ = 15442954560. Its totient is φ = 9109727232.

The previous prime is 12126516751. The next prime is 12126516763. The reversal of 12126516755 is 55761562121.

It is a cyclic number.

It is not a de Polignac number, because 12126516755 - 2² = 12126516751 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12126516751) 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, 125174 + ... + 199803.

It is an arithmetic number, because the mean of its divisors is an integer number (965184660).

Almost surely, 2^12126516755 is an apocalyptic number.

12126516755 is a deficient number, since it is larger than the sum of its proper divisors (3316437805).

12126516755 is a wasteful number, since it uses less digits than its factorization.

12126516755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325438.

The product of its digits is 126000, while the sum is 41.

The spelling of 12126516755 in words is "twelve billion, one hundred twenty-six million, five hundred sixteen thousand, seven hundred fifty-five".