38387525785577 has 8 divisors (see below), whose sum is σ = 38434212582600. Its totient is φ = 38340839908224.

The previous prime is 38387525785507. The next prime is 38387525785579. The reversal of 38387525785577 is 77558752578383.

It can be written as a sum of positive squares in 4 ways, for example, as 1773275742736 + 36614250042841 = 1331644^2 + 6050971^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38387525785577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38387525785579) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123960749 + ... + 124270037.

It is an arithmetic number, because the mean of its divisors is an integer number (4804276572825).

Almost surely, 2^{38387525785577} is an apocalyptic number.

It is an amenable number.

38387525785577 is a deficient number, since it is larger than the sum of its proper divisors (46686797023).

38387525785577 is a wasteful number, since it uses less digits than its factorization.

38387525785577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459835.

The product of its digits is 13829760000, while the sum is 80.

The spelling of 38387525785577 in words is "thirty-eight trillion, three hundred eighty-seven billion, five hundred twenty-five million, seven hundred eighty-five thousand, five hundred seventy-seven".