38768686777 has 2 divisors, whose sum is σ = 38768686778. Its totient is φ = 38768686776.

The previous prime is 38768686763. The next prime is 38768686783. The reversal of 38768686777 is 77768686783.

38768686777 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30507512896 + 8261173881 = 174664^2 + 90891^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38768686777 is a prime.

It is a super-2 number, since 2×38768686777² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (38768686727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19384343388 + 19384343389.

It is an arithmetic number, because the mean of its divisors is an integer number (19384343389).

Almost surely, 2^38768686777 is an apocalyptic number.

It is an amenable number.

38768686777 is a deficient number, since it is larger than the sum of its proper divisors (1).

38768686777 is an equidigital number, since it uses as much as digits as its factorization.

38768686777 is an evil number, because the sum of its binary digits is even.

The product of its digits is 796594176, while the sum is 73.

The spelling of 38768686777 in words is "thirty-eight billion, seven hundred sixty-eight million, six hundred eighty-six thousand, seven hundred seventy-seven".