38778253636277 has 2 divisors, whose sum is σ = 38778253636278. Its totient is φ = 38778253636276.

The previous prime is 38778253636247. The next prime is 38778253636303. The reversal of 38778253636277 is 77263635287783.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35487171466321 + 3291082169956 = 5957111^2 + 1814134^2 .

It is a cyclic number.

It is not a de Polignac number, because 38778253636277 - 2¹⁴ = 38778253619893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38778253636207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19389126818138 + 19389126818139.

It is an arithmetic number, because the mean of its divisors is an integer number (19389126818139).

Almost surely, 2^{38778253636277} is an apocalyptic number.

It is an amenable number.

38778253636277 is a deficient number, since it is larger than the sum of its proper divisors (1).

38778253636277 is an equidigital number, since it uses as much as digits as its factorization.

38778253636277 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2987228160, while the sum is 74.

The spelling of 38778253636277 in words is "thirty-eight trillion, seven hundred seventy-eight billion, two hundred fifty-three million, six hundred thirty-six thousand, two hundred seventy-seven".