68615265543 has 32 divisors (see below), whose sum is σ = 100833638400. Its totient is φ = 41157698400.

The previous prime is 68615265539. The next prime is 68615265557. The reversal of 68615265543 is 34556251686.

It is not a de Polignac number, because 68615265543 - 2² = 68615265539 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68615265443) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 1617478 + ... + 1659356.

It is an arithmetic number, because the mean of its divisors is an integer number (3151051200).

Almost surely, 2^68615265543 is an apocalyptic number.

68615265543 is a deficient number, since it is larger than the sum of its proper divisors (32218372857).

68615265543 is a wasteful number, since it uses less digits than its factorization.

68615265543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42403.

The product of its digits is 5184000, while the sum is 51.

The spelling of 68615265543 in words is "sixty-eight billion, six hundred fifteen million, two hundred sixty-five thousand, five hundred forty-three".