38987125687 has 4 divisors (see below), whose sum is σ = 38997300960. Its totient is φ = 38976950416.

The previous prime is 38987125673. The next prime is 38987125699. The reversal of 38987125687 is 78652178983.

It is a happy number.

38987125687 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 38987125687 - 2¹¹ = 38987123639 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 (38987125657) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5081887 + ... + 5089552.

It is an arithmetic number, because the mean of its divisors is an integer number (9749325240).

Almost surely, 2^38987125687 is an apocalyptic number.

38987125687 is a deficient number, since it is larger than the sum of its proper divisors (10175273).

38987125687 is a wasteful number, since it uses less digits than its factorization.

38987125687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10175272.

The product of its digits is 40642560, while the sum is 64.

The spelling of 38987125687 in words is "thirty-eight billion, nine hundred eighty-seven million, one hundred twenty-five thousand, six hundred eighty-seven".