12045126555 has 96 divisors (see below), whose sum is σ = 26072017920. Its totient is φ = 4997687040.

The previous prime is 12045126553. The next prime is 12045126559. The reversal of 12045126555 is 55562154021.

It is not a de Polignac number, because 12045126555 - 2¹ = 12045126553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12045126553) 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 95 ways as a sum of consecutive naturals, for example, 2454234 + ... + 2459136.

It is an arithmetic number, because the mean of its divisors is an integer number (271583520).

Almost surely, 2^12045126555 is an apocalyptic number.

12045126555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12045126555 is an abundant number, since it is smaller than the sum of its proper divisors (14026891365).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12045126555 is a wasteful number, since it uses less digits than its factorization.

12045126555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5641 (or 5638 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 36.

The spelling of 12045126555 in words is "twelve billion, forty-five million, one hundred twenty-six thousand, five hundred fifty-five".