11446813438566 has 64 divisors (see below), whose sum is σ = 25343901513216. Its totient is φ = 3417577401600.

The previous prime is 11446813438519. The next prime is 11446813438573. The reversal of 11446813438566 is 66583431864411.

It is a super-2 number, since 2×11446813438566² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3271335 + ... + 5796141.

It is an arithmetic number, because the mean of its divisors is an integer number (395998461144).

Almost surely, 2^{11446813438566} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11446813438566, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12671950756608).

11446813438566 is an abundant number, since it is smaller than the sum of its proper divisors (13897088074650).

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

11446813438566 is a wasteful number, since it uses less digits than its factorization.

11446813438566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2525837.

The product of its digits is 39813120, while the sum is 60.

The spelling of 11446813438566 in words is "eleven trillion, four hundred forty-six billion, eight hundred thirteen million, four hundred thirty-eight thousand, five hundred sixty-six".