38358687073781 has 2 divisors, whose sum is σ = 38358687073782. Its totient is φ = 38358687073780.

The previous prime is 38358687073771. The next prime is 38358687073783. The reversal of 38358687073781 is 18737078685383.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20034208969681 + 18324478104100 = 4475959^2 + 4280710^2 .

It is a cyclic number.

It is not a de Polignac number, because 38358687073781 - 2²² = 38358682879477 is a prime.

It is a super-2 number, since 2×38358687073781² (a number of 28 digits) contains 22 as substring.

Together with 38358687073783, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 38358687073699 and 38358687073708.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38358687073783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19179343536890 + 19179343536891.

It is an arithmetic number, because the mean of its divisors is an integer number (19179343536891).

Almost surely, 2^{38358687073781} is an apocalyptic number.

It is an amenable number.

38358687073781 is a deficient number, since it is larger than the sum of its proper divisors (1).

38358687073781 is an equidigital number, since it uses as much as digits as its factorization.

38358687073781 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1137991680, while the sum is 74.

The spelling of 38358687073781 in words is "thirty-eight trillion, three hundred fifty-eight billion, six hundred eighty-seven million, seventy-three thousand, seven hundred eighty-one".