3813138827666 has 16 divisors (see below), whose sum is σ = 6537358601280. Its totient is φ = 1634065059120.

The previous prime is 3813138827647. The next prime is 3813138827671. The reversal of 3813138827666 is 6667288313183.

It is a junction number, because it is equal to n+sod(n) for n = 3813138827599 and 3813138827608.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11268620 + ... + 11602071.

It is an arithmetic number, because the mean of its divisors is an integer number (408584912580).

Almost surely, 2^{3813138827666} is an apocalyptic number.

3813138827666 is a deficient number, since it is larger than the sum of its proper divisors (2724219773614).

3813138827666 is a wasteful number, since it uses less digits than its factorization.

3813138827666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22882609.

The product of its digits is 41803776, while the sum is 62.

The spelling of 3813138827666 in words is "three trillion, eight hundred thirteen billion, one hundred thirty-eight million, eight hundred twenty-seven thousand, six hundred sixty-six".