38781114256791 has 12 divisors (see below), whose sum is σ = 56020224149968. Its totient is φ = 25852664273184.

The previous prime is 38781114256727. The next prime is 38781114256817. The reversal of 38781114256791 is 19765241118783.

38781114256791 is a `hidden beast` number, since 3 + 8 + 7 + 8 + 111 + 425 + 6 + 7 + 91 = 666.

It is not a de Polignac number, because 38781114256791 - 2⁶ = 38781114256727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38781114256091) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 117484195 + ... + 117813828.

Almost surely, 2^{38781114256791} is an apocalyptic number.

38781114256791 is a deficient number, since it is larger than the sum of its proper divisors (17239109893177).

38781114256791 is a wasteful number, since it uses less digits than its factorization.

38781114256791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235316342 (or 235316339 counting only the distinct ones).

The product of its digits is 20321280, while the sum is 63.

The spelling of 38781114256791 in words is "thirty-eight trillion, seven hundred eighty-one billion, one hundred fourteen million, two hundred fifty-six thousand, seven hundred ninety-one".