38682103583621 has 4 divisors (see below), whose sum is σ = 38683744000044. Its totient is φ = 38680463167200.

The previous prime is 38682103583597. The next prime is 38682103583657. The reversal of 38682103583621 is 12638530128683.

It is a happy number.

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 15719750054596 + 22962353529025 = 3964814^2 + 4791905^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38682103583621 is a prime.

It is a super-2 number, since 2×38682103583621² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38682103580621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 820172840 + ... + 820220001.

It is an arithmetic number, because the mean of its divisors is an integer number (9670936000011).

Almost surely, 2^{38682103583621} is an apocalyptic number.

It is an amenable number.

38682103583621 is a deficient number, since it is larger than the sum of its proper divisors (1640416423).

38682103583621 is a wasteful number, since it uses less digits than its factorization.

38682103583621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1640416422.

The product of its (nonzero) digits is 9953280, while the sum is 56.

The spelling of 38682103583621 in words is "thirty-eight trillion, six hundred eighty-two billion, one hundred three million, five hundred eighty-three thousand, six hundred twenty-one".