38550221867 has 4 divisors (see below), whose sum is σ = 38550951936. Its totient is φ = 38549491800.

The previous prime is 38550221861. The next prime is 38550221903. The reversal of 38550221867 is 76812205583.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76812205583 = 271 ⋅283439873.

It is a cyclic number.

It is not a de Polignac number, because 38550221867 - 2⁴ = 38550221851 is a prime.

It is a super-2 number, since 2×38550221867² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38550221861) 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, 279083 + ... + 393684.

It is an arithmetic number, because the mean of its divisors is an integer number (9637737984).

Almost surely, 2^38550221867 is an apocalyptic number.

38550221867 is a deficient number, since it is larger than the sum of its proper divisors (730069).

38550221867 is an equidigital number, since it uses as much as digits as its factorization.

38550221867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 730068.

The product of its (nonzero) digits is 806400, while the sum is 47.

The spelling of 38550221867 in words is "thirty-eight billion, five hundred fifty million, two hundred twenty-one thousand, eight hundred sixty-seven".