38678422706813 has 2 divisors, whose sum is σ = 38678422706814. Its totient is φ = 38678422706812.

The previous prime is 38678422706761. The next prime is 38678422706827. The reversal of 38678422706813 is 31860722487683.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20641056957049 + 18037365749764 = 4543243^2 + 4247042^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38678422706813 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38678422706813.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38678422706843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19339211353406 + 19339211353407.

It is an arithmetic number, because the mean of its divisors is an integer number (19339211353407).

Almost surely, 2^{38678422706813} is an apocalyptic number.

It is an amenable number.

38678422706813 is a deficient number, since it is larger than the sum of its proper divisors (1).

38678422706813 is an equidigital number, since it uses as much as digits as its factorization.

38678422706813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 130056192, while the sum is 65.

The spelling of 38678422706813 in words is "thirty-eight trillion, six hundred seventy-eight billion, four hundred twenty-two million, seven hundred six thousand, eight hundred thirteen".