3886668229621 has 16 divisors (see below), whose sum is σ = 4033366064640. Its totient is φ = 3742537785840.

The previous prime is 3886668229553. The next prime is 3886668229673. The reversal of 3886668229621 is 1269228666883.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3886668229621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3886668229681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50699506 + ... + 50776108.

It is an arithmetic number, because the mean of its divisors is an integer number (252085379040).

Almost surely, 2^{3886668229621} is an apocalyptic number.

It is an amenable number.

3886668229621 is a deficient number, since it is larger than the sum of its proper divisors (146697835019).

3886668229621 is a wasteful number, since it uses less digits than its factorization.

3886668229621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93336.

The product of its digits is 143327232, while the sum is 67.

The spelling of 3886668229621 in words is "three trillion, eight hundred eighty-six billion, six hundred sixty-eight million, two hundred twenty-nine thousand, six hundred twenty-one".