4381005338661 has 96 divisors (see below), whose sum is σ = 7081735598080. Its totient is φ = 2359116410112.

The previous prime is 4381005338653. The next prime is 4381005338663. The reversal of 4381005338661 is 1668335001834.

It is not a de Polignac number, because 4381005338661 - 2³ = 4381005338653 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4381005338661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4381005338663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 128961300 + ... + 128995266.

Almost surely, 2^{4381005338661} is an apocalyptic number.

It is an amenable number.

4381005338661 is a deficient number, since it is larger than the sum of its proper divisors (2700730259419).

4381005338661 is a wasteful number, since it uses less digits than its factorization.

4381005338661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34211 (or 34182 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 48.

The spelling of 4381005338661 in words is "four trillion, three hundred eighty-one billion, five million, three hundred thirty-eight thousand, six hundred sixty-one".