68547612646 has 16 divisors (see below), whose sum is σ = 104775449184. Its totient is φ = 33622635904.

The previous prime is 68547612611. The next prime is 68547612647. The reversal of 68547612646 is 64621674586.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68547612647) 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 7 ways as a sum of consecutive naturals, for example, 837855 + ... + 916021.

It is an arithmetic number, because the mean of its divisors is an integer number (6548465574).

Almost surely, 2^68547612646 is an apocalyptic number.

68547612646 is a deficient number, since it is larger than the sum of its proper divisors (36227836538).

68547612646 is a wasteful number, since it uses less digits than its factorization.

68547612646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86495.

The product of its digits is 11612160, while the sum is 55.

The spelling of 68547612646 in words is "sixty-eight billion, five hundred forty-seven million, six hundred twelve thousand, six hundred forty-six".