38564888077 has 2 divisors, whose sum is σ = 38564888078. Its totient is φ = 38564888076.

The previous prime is 38564888039. The next prime is 38564888099. The reversal of 38564888077 is 77088846583.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33315740676 + 5249147401 = 182526^2 + 72451^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38564888077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38564888017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19282444038 + 19282444039.

It is an arithmetic number, because the mean of its divisors is an integer number (19282444039).

Almost surely, 2^38564888077 is an apocalyptic number.

It is an amenable number.

38564888077 is a deficient number, since it is larger than the sum of its proper divisors (1).

38564888077 is an equidigital number, since it uses as much as digits as its factorization.

38564888077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72253440, while the sum is 64.

The spelling of 38564888077 in words is "thirty-eight billion, five hundred sixty-four million, eight hundred eighty-eight thousand, seventy-seven".