68541824964 has 12 divisors (see below), whose sum is σ = 159930924944. Its totient is φ = 22847274984.

The previous prime is 68541824959. The next prime is 68541825017. The reversal of 68541824964 is 46942814586.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×68541824964² (a number of 22 digits) contains 22 as substring.

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, 2855909362 + ... + 2855909385.

Almost surely, 2^68541824964 is an apocalyptic number.

It is an amenable number.

68541824964 is an abundant number, since it is smaller than the sum of its proper divisors (91389099980).

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

68541824964 is a wasteful number, since it uses less digits than its factorization.

68541824964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5711818754 (or 5711818752 counting only the distinct ones).

The product of its digits is 13271040, while the sum is 57.

The spelling of 68541824964 in words is "sixty-eight billion, five hundred forty-one million, eight hundred twenty-four thousand, nine hundred sixty-four".