8657987855138 has 8 divisors (see below), whose sum is σ = 13120868193132. Its totient is φ = 4284365124096.

The previous prime is 8657987855123. The next prime is 8657987855159. The reversal of 8657987855138 is 8315587897568.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 8375913209689 + 282074645449 = 2894117^2 + 531107^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22314401495 + ... + 22314401882.

Almost surely, 2^{8657987855138} is an apocalyptic number.

8657987855138 is a deficient number, since it is larger than the sum of its proper divisors (4462880337994).

8657987855138 is a wasteful number, since it uses less digits than its factorization.

8657987855138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44628803476.

The product of its digits is 4064256000, while the sum is 80.

The spelling of 8657987855138 in words is "eight trillion, six hundred fifty-seven billion, nine hundred eighty-seven million, eight hundred fifty-five thousand, one hundred thirty-eight".