12455536566 has 32 divisors (see below), whose sum is σ = 27203672448. Its totient is φ = 3770522240.

The previous prime is 12455536559. The next prime is 12455536567. The reversal of 12455536566 is 66563555421.

It is a super-2 number, since 2×12455536566² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12455536567) 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, 32100 + ... + 161063.

It is an arithmetic number, because the mean of its divisors is an integer number (850114764).

Almost surely, 2^12455536566 is an apocalyptic number.

12455536566 is an abundant number, since it is smaller than the sum of its proper divisors (14748135882).

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

12455536566 is a wasteful number, since it uses less digits than its factorization.

12455536566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194156.

The product of its digits is 3240000, while the sum is 48.

The spelling of 12455536566 in words is "twelve billion, four hundred fifty-five million, five hundred thirty-six thousand, five hundred sixty-six".