3866669522593 has 4 divisors (see below), whose sum is σ = 3871449090180. Its totient is φ = 3861889955008.

The previous prime is 3866669522533. The next prime is 3866669522633. The reversal of 3866669522593 is 3952259666683.

It is a happy number.

3866669522593 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 3190571171089 + 676098351504 = 1786217^2 + 822252^2 .

It is a cyclic number.

It is not a de Polignac number, because 3866669522593 - 2¹³ = 3866669514401 is a prime.

It is a super-2 number, since 2×3866669522593² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3866669522533) 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, 2389782580 + ... + 2389784197.

It is an arithmetic number, because the mean of its divisors is an integer number (967862272545).

Almost surely, 2^{3866669522593} is an apocalyptic number.

It is an amenable number.

3866669522593 is a deficient number, since it is larger than the sum of its proper divisors (4779567587).

3866669522593 is an equidigital number, since it uses as much as digits as its factorization.

3866669522593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4779567586.

The product of its digits is 755827200, while the sum is 70.

The spelling of 3866669522593 in words is "three trillion, eight hundred sixty-six billion, six hundred sixty-nine million, five hundred twenty-two thousand, five hundred ninety-three".