38317078557 has 6 divisors (see below), whose sum is σ = 55346891262. Its totient is φ = 25544719032.

The previous prime is 38317078511. The next prime is 38317078561. The reversal of 38317078557 is 75587071383.

38317078557 is a `hidden beast` number, since 3 + 8 + 3 + 17 + 0 + 78 + 557 = 666.

It can be written as a sum of positive squares in only one way, i.e., 22650551001 + 15666527556 = 150501^2 + 125166^2 .

It is not a de Polignac number, because 38317078557 - 2⁶ = 38317078493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38317078057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2128726578 + ... + 2128726595.

It is an arithmetic number, because the mean of its divisors is an integer number (9224481877).

Almost surely, 2^38317078557 is an apocalyptic number.

It is an amenable number.

38317078557 is a deficient number, since it is larger than the sum of its proper divisors (17029812705).

38317078557 is a wasteful number, since it uses less digits than its factorization.

38317078557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4257453179 (or 4257453176 counting only the distinct ones).

The product of its (nonzero) digits is 4939200, while the sum is 54.

The spelling of 38317078557 in words is "thirty-eight billion, three hundred seventeen million, seventy-eight thousand, five hundred fifty-seven".