126566313213 has 8 divisors (see below), whose sum is σ = 169479355968. Its totient is φ = 84015406304.

The previous prime is 126566313143. The next prime is 126566313257. The reversal of 126566313213 is 312313665621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 126566313213 - 2²¹ = 126564216061 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 (126566311213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90533145 + ... + 90534542.

It is an arithmetic number, because the mean of its divisors is an integer number (21184919496).

Almost surely, 2^126566313213 is an apocalyptic number.

It is an amenable number.

126566313213 is a deficient number, since it is larger than the sum of its proper divisors (42913042755).

126566313213 is a wasteful number, since it uses less digits than its factorization.

126566313213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181067923.

The product of its digits is 116640, while the sum is 39.

Adding to 126566313213 its reverse (312313665621), we get a palindrome (438879978834).

The spelling of 126566313213 in words is "one hundred twenty-six billion, five hundred sixty-six million, three hundred thirteen thousand, two hundred thirteen".