38755822446721 has 4 divisors (see below), whose sum is σ = 39487064379732. Its totient is φ = 38024580513712.

The previous prime is 38755822446683. The next prime is 38755822446743. The reversal of 38755822446721 is 12764422855783.

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 16873495045696 + 21882327401025 = 4107736^2 + 4677855^2 .

It is a cyclic number.

It is not a de Polignac number, because 38755822446721 - 2¹⁷ = 38755822315649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38755822446521) 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, 365620966426 + ... + 365620966531.

It is an arithmetic number, because the mean of its divisors is an integer number (9871766094933).

Almost surely, 2^{38755822446721} is an apocalyptic number.

It is an amenable number.

38755822446721 is a deficient number, since it is larger than the sum of its proper divisors (731241933011).

38755822446721 is an equidigital number, since it uses as much as digits as its factorization.

38755822446721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 731241933010.

The product of its digits is 180633600, while the sum is 64.

The spelling of 38755822446721 in words is "thirty-eight trillion, seven hundred fifty-five billion, eight hundred twenty-two million, four hundred forty-six thousand, seven hundred twenty-one".