38272684421 has 2 divisors, whose sum is σ = 38272684422. Its totient is φ = 38272684420.

The previous prime is 38272684393. The next prime is 38272684427. The reversal of 38272684421 is 12448627283.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23130151396 + 15142533025 = 152086^2 + 123055^2 .

It is an emirp because it is prime and its reverse (12448627283) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38272684421 - 2³⁰ = 37198942597 is a prime.

It is a super-2 number, since 2×38272684421² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38272684427) 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 as a sum of consecutive naturals, namely, 19136342210 + 19136342211.

It is an arithmetic number, because the mean of its divisors is an integer number (19136342211).

Almost surely, 2^38272684421 is an apocalyptic number.

It is an amenable number.

38272684421 is a deficient number, since it is larger than the sum of its proper divisors (1).

38272684421 is an equidigital number, since it uses as much as digits as its factorization.

38272684421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1032192, while the sum is 47.

The spelling of 38272684421 in words is "thirty-eight billion, two hundred seventy-two million, six hundred eighty-four thousand, four hundred twenty-one".