38506413402481 has 2 divisors, whose sum is σ = 38506413402482. Its totient is φ = 38506413402480.

The previous prime is 38506413402467. The next prime is 38506413402571. The reversal of 38506413402481 is 18420431460583.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22425992600881 + 16080420801600 = 4735609^2 + 4010040^2 .

It is a cyclic number.

It is not a de Polignac number, because 38506413402481 - 2¹⁷ = 38506413271409 is a prime.

It is a super-2 number, since 2×38506413402481² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (38506413402181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19253206701240 + 19253206701241.

It is an arithmetic number, because the mean of its divisors is an integer number (19253206701241).

Almost surely, 2^{38506413402481} is an apocalyptic number.

It is an amenable number.

38506413402481 is a deficient number, since it is larger than the sum of its proper divisors (1).

38506413402481 is an equidigital number, since it uses as much as digits as its factorization.

38506413402481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2211840, while the sum is 49.

The spelling of 38506413402481 in words is "thirty-eight trillion, five hundred six billion, four hundred thirteen million, four hundred two thousand, four hundred eighty-one".