38634266243641 has 2 divisors, whose sum is σ = 38634266243642. Its totient is φ = 38634266243640.

The previous prime is 38634266243627. The next prime is 38634266243717. The reversal of 38634266243641 is 14634266243683.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23361958563241 + 15272307680400 = 4833421^2 + 3907980^2 .

It is an emirp because it is prime and its reverse (14634266243683) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38634266243641 - 2⁷ = 38634266243513 is a prime.

It is not a weakly prime, because it can be changed into another prime (38634266243141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19317133121820 + 19317133121821.

It is an arithmetic number, because the mean of its divisors is an integer number (19317133121821).

Almost surely, 2^{38634266243641} is an apocalyptic number.

It is an amenable number.

38634266243641 is a deficient number, since it is larger than the sum of its proper divisors (1).

38634266243641 is an equidigital number, since it uses as much as digits as its factorization.

38634266243641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 71663616, while the sum is 58.

The spelling of 38634266243641 in words is "thirty-eight trillion, six hundred thirty-four billion, two hundred sixty-six million, two hundred forty-three thousand, six hundred forty-one".