68178486546 has 48 divisors (see below), whose sum is σ = 148467896928. Its totient is φ = 22611355200.

The previous prime is 68178486533. The next prime is 68178486547. The reversal of 68178486546 is 64568487186.

68178486546 is a `hidden beast` number, since 6 + 8 + 1 + 7 + 8 + 4 + 86 + 546 = 666.

It is not an unprimeable number, because it can be changed into a prime (68178486547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3485325 + ... + 3504831.

It is an arithmetic number, because the mean of its divisors is an integer number (3093081186).

Almost surely, 2^68178486546 is an apocalyptic number.

68178486546 is an abundant number, since it is smaller than the sum of its proper divisors (80289410382).

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

68178486546 is a wasteful number, since it uses less digits than its factorization.

68178486546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20487 (or 20484 counting only the distinct ones).

The product of its digits is 61931520, while the sum is 63.

The spelling of 68178486546 in words is "sixty-eight billion, one hundred seventy-eight million, four hundred eighty-six thousand, five hundred forty-six".