38717861674109 has 2 divisors, whose sum is σ = 38717861674110. Its totient is φ = 38717861674108.

The previous prime is 38717861674103. The next prime is 38717861674127. The reversal of 38717861674109 is 90147616871783.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29784469975225 + 8933391698884 = 5457515^2 + 2988878^2 .

It is a cyclic number.

It is not a de Polignac number, because 38717861674109 - 2⁸ = 38717861673853 is a prime.

It is a super-2 number, since 2×38717861674109² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38717861674103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19358930837054 + 19358930837055.

It is an arithmetic number, because the mean of its divisors is an integer number (19358930837055).

Almost surely, 2^{38717861674109} is an apocalyptic number.

It is an amenable number.

38717861674109 is a deficient number, since it is larger than the sum of its proper divisors (1).

38717861674109 is an equidigital number, since it uses as much as digits as its factorization.

38717861674109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 85349376, while the sum is 68.

The spelling of 38717861674109 in words is "thirty-eight trillion, seven hundred seventeen billion, eight hundred sixty-one million, six hundred seventy-four thousand, one hundred nine".