12542540666064 has 20 divisors (see below), whose sum is σ = 32401563387456. Its totient is φ = 4180846888672.

The previous prime is 12542540666017. The next prime is 12542540666129. The reversal of 12542540666064 is 46066604524521.

It is a super-2 number, since 2×12542540666064² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12542540665998 and 12542540666016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130651465224 + ... + 130651465319.

Almost surely, 2^{12542540666064} is an apocalyptic number.

It is an amenable number.

12542540666064 is an abundant number, since it is smaller than the sum of its proper divisors (19859022721392).

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

12542540666064 is a wasteful number, since it uses less digits than its factorization.

12542540666064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261302930554 (or 261302930548 counting only the distinct ones).

The product of its (nonzero) digits is 8294400, while the sum is 51.

The spelling of 12542540666064 in words is "twelve trillion, five hundred forty-two billion, five hundred forty million, six hundred sixty-six thousand, sixty-four".