68665582554 has 32 divisors (see below), whose sum is σ = 137839800384. Its totient is φ = 22803830400.

The previous prime is 68665582549. The next prime is 68665582571. The reversal of 68665582554 is 45528556686.

It is a happy number.

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 15 ways as a sum of consecutive naturals, for example, 4204204 + ... + 4220504.

It is an arithmetic number, because the mean of its divisors is an integer number (4307493762).

Almost surely, 2^68665582554 is an apocalyptic number.

68665582554 is an abundant number, since it is smaller than the sum of its proper divisors (69174217830).

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

68665582554 is a wasteful number, since it uses less digits than its factorization.

68665582554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18862.

The product of its digits is 69120000, while the sum is 60.

The spelling of 68665582554 in words is "sixty-eight billion, six hundred sixty-five million, five hundred eighty-two thousand, five hundred fifty-four".