12456565011 has 24 divisors (see below), whose sum is σ = 19632138240. Its totient is φ = 7548044400.

The previous prime is 12456565007. The next prime is 12456565013. The reversal of 12456565011 is 11056565421.

12456565011 is a `hidden beast` number, since 1 + 24 + 565 + 65 + 0 + 11 = 666.

It is not a de Polignac number, because 12456565011 - 2² = 12456565007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12456565013) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 855966 + ... + 870396.

It is an arithmetic number, because the mean of its divisors is an integer number (818005760).

Almost surely, 2^12456565011 is an apocalyptic number.

12456565011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12456565011 is a deficient number, since it is larger than the sum of its proper divisors (7175573229).

12456565011 is a wasteful number, since it uses less digits than its factorization.

12456565011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23167 (or 23164 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 36.

The spelling of 12456565011 in words is "twelve billion, four hundred fifty-six million, five hundred sixty-five thousand, eleven".