38775015729 has 12 divisors (see below), whose sum is σ = 57815077632. Its totient is φ = 25016139000.

The previous prime is 38775015707. The next prime is 38775015733. The reversal of 38775015729 is 92751057783.

It is a happy number.

38775015729 is a `hidden beast` number, since 3 + 87 + 7 + 501 + 57 + 2 + 9 = 666.

It is not a de Polignac number, because 38775015729 - 2⁸ = 38775015473 is a prime.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (38775015739) 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, 69488997 + ... + 69489554.

It is an arithmetic number, because the mean of its divisors is an integer number (4817923136).

Almost surely, 2^38775015729 is an apocalyptic number.

It is an amenable number.

38775015729 is a deficient number, since it is larger than the sum of its proper divisors (19040061903).

38775015729 is a wasteful number, since it uses less digits than its factorization.

38775015729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138978588 (or 138978585 counting only the distinct ones).

The product of its (nonzero) digits is 3704400, while the sum is 54.

The spelling of 38775015729 in words is "thirty-eight billion, seven hundred seventy-five million, fifteen thousand, seven hundred twenty-nine".