38852571278821 has 2 divisors, whose sum is σ = 38852571278822. Its totient is φ = 38852571278820.

The previous prime is 38852571278809. The next prime is 38852571278839. The reversal of 38852571278821 is 12887217525883.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38603481448900 + 249089829921 = 6213170^2 + 499089^2 .

It is a cyclic number.

It is not a de Polignac number, because 38852571278821 - 2⁷ = 38852571278693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38852571278881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19426285639410 + 19426285639411.

It is an arithmetic number, because the mean of its divisors is an integer number (19426285639411).

Almost surely, 2^{38852571278821} is an apocalyptic number.

It is an amenable number.

38852571278821 is a deficient number, since it is larger than the sum of its proper divisors (1).

38852571278821 is an equidigital number, since it uses as much as digits as its factorization.

38852571278821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120422400, while the sum is 67.

The spelling of 38852571278821 in words is "thirty-eight trillion, eight hundred fifty-two billion, five hundred seventy-one million, two hundred seventy-eight thousand, eight hundred twenty-one".