38884043521 has 2 divisors, whose sum is σ = 38884043522. Its totient is φ = 38884043520.

The previous prime is 38884043479. The next prime is 38884043567. The reversal of 38884043521 is 12534048883.

It is an a-pointer prime, because the next prime (38884043567) can be obtained adding 38884043521 to its sum of digits (46).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38873642896 + 10400625 = 197164^2 + 3225^2 .

It is an emirp because it is prime and its reverse (12534048883) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38884043521 - 2¹¹ = 38884041473 is a prime.

It is not a weakly prime, because it can be changed into another prime (38884043321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19442021760 + 19442021761.

It is an arithmetic number, because the mean of its divisors is an integer number (19442021761).

Almost surely, 2^38884043521 is an apocalyptic number.

It is an amenable number.

38884043521 is a deficient number, since it is larger than the sum of its proper divisors (1).

38884043521 is an equidigital number, since it uses as much as digits as its factorization.

38884043521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 737280, while the sum is 46.

The spelling of 38884043521 in words is "thirty-eight billion, eight hundred eighty-four million, forty-three thousand, five hundred twenty-one".