66144266334213 has 4 divisors (see below), whose sum is σ = 88192355112288. Its totient is φ = 44096177556140.

The previous prime is 66144266334203. The next prime is 66144266334259. The reversal of 66144266334213 is 31243366244166.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 66144266334213 - 2⁴ = 66144266334197 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66144266334203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11024044389033 + ... + 11024044389038.

It is an arithmetic number, because the mean of its divisors is an integer number (22048088778072).

Almost surely, 2^{66144266334213} is an apocalyptic number.

It is an amenable number.

66144266334213 is a deficient number, since it is larger than the sum of its proper divisors (22048088778075).

66144266334213 is a wasteful number, since it uses less digits than its factorization.

66144266334213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22048088778074.

The product of its digits is 8957952, while the sum is 51.

The spelling of 66144266334213 in words is "sixty-six trillion, one hundred forty-four billion, two hundred sixty-six million, three hundred thirty-four thousand, two hundred thirteen".