38387777667047 has 2 divisors, whose sum is σ = 38387777667048. Its totient is φ = 38387777667046.

The previous prime is 38387777666983. The next prime is 38387777667061. The reversal of 38387777667047 is 74076677778383.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 38387777667047 - 2⁶ = 38387777666983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38387777667247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19193888833523 + 19193888833524.

It is an arithmetic number, because the mean of its divisors is an integer number (19193888833524).

Almost surely, 2^{38387777667047} is an apocalyptic number.

38387777667047 is a deficient number, since it is larger than the sum of its proper divisors (1).

38387777667047 is an equidigital number, since it uses as much as digits as its factorization.

38387777667047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9758278656, while the sum is 80.

The spelling of 38387777667047 in words is "thirty-eight trillion, three hundred eighty-seven billion, seven hundred seventy-seven million, six hundred sixty-seven thousand, forty-seven".