11966458213 has 4 divisors (see below), whose sum is σ = 11968900780. Its totient is φ = 11964015648.

The previous prime is 11966458187. The next prime is 11966458223. The reversal of 11966458213 is 31285466911.

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 10361814849 + 1604643364 = 101793^2 + 40058^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11966458213 is a prime.

It is a super-2 number, since 2×11966458213² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11966458223) 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, 1213920 + ... + 1223737.

It is an arithmetic number, because the mean of its divisors is an integer number (2992225195).

Almost surely, 2^11966458213 is an apocalyptic number.

It is an amenable number.

11966458213 is a deficient number, since it is larger than the sum of its proper divisors (2442567).

11966458213 is an equidigital number, since it uses as much as digits as its factorization.

11966458213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2442566.

The product of its digits is 311040, while the sum is 46.

The spelling of 11966458213 in words is "eleven billion, nine hundred sixty-six million, four hundred fifty-eight thousand, two hundred thirteen".