66134612412413 has 4 divisors (see below), whose sum is σ = 66140165754780. Its totient is φ = 66129059070048.

The previous prime is 66134612412391. The next prime is 66134612412461. The reversal of 66134612412413 is 31421421643166.

66134612412413 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23859297621604 + 42275314790809 = 4884598^2 + 6501947^2 .

It is a cyclic number.

It is not a de Polignac number, because 66134612412413 - 2²⁴ = 66134595635197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66134612414413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2776653320 + ... + 2776677137.

It is an arithmetic number, because the mean of its divisors is an integer number (16535041438695).

Almost surely, 2^{66134612412413} is an apocalyptic number.

It is an amenable number.

66134612412413 is a deficient number, since it is larger than the sum of its proper divisors (5553342367).

66134612412413 is a wasteful number, since it uses less digits than its factorization.

66134612412413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5553342366.

The product of its digits is 497664, while the sum is 44.

The spelling of 66134612412413 in words is "sixty-six trillion, one hundred thirty-four billion, six hundred twelve million, four hundred twelve thousand, four hundred thirteen".