38813858610643 has 2 divisors, whose sum is σ = 38813858610644. Its totient is φ = 38813858610642.

The previous prime is 38813858610617. The next prime is 38813858610691. The reversal of 38813858610643 is 34601685831883.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38813858610643 is a prime.

It is not a weakly prime, because it can be changed into another prime (38813858610343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19406929305321 + 19406929305322.

It is an arithmetic number, because the mean of its divisors is an integer number (19406929305322).

Almost surely, 2^{38813858610643} is an apocalyptic number.

38813858610643 is a deficient number, since it is larger than the sum of its proper divisors (1).

38813858610643 is an equidigital number, since it uses as much as digits as its factorization.

38813858610643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 79626240, while the sum is 64.

The spelling of 38813858610643 in words is "thirty-eight trillion, eight hundred thirteen billion, eight hundred fifty-eight million, six hundred ten thousand, six hundred forty-three".