2687895386568 has 128 divisors (see below), whose sum is σ = 8714554675200. Its totient is φ = 751630300992.

The previous prime is 2687895386557. The next prime is 2687895386573. The reversal of 2687895386568 is 8656835987862.

2687895386568 is a `hidden beast` number, since 2 + 6 + 8 + 78 + 9 + 538 + 6 + 5 + 6 + 8 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18840730 + ... + 18982857.

It is an arithmetic number, because the mean of its divisors is an integer number (68082458400).

Almost surely, 2^{2687895386568} is an apocalyptic number.

2687895386568 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2687895386568 is an abundant number, since it is smaller than the sum of its proper divisors (6026659288632).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2687895386568 is a wasteful number, since it uses less digits than its factorization.

2687895386568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37823656 (or 37823646 counting only the distinct ones).

The product of its digits is 8360755200, while the sum is 81.

The spelling of 2687895386568 in words is "two trillion, six hundred eighty-seven billion, eight hundred ninety-five million, three hundred eighty-six thousand, five hundred sixty-eight".