68380490178 has 144 divisors (see below), whose sum is σ = 200432651328. Its totient is φ = 16394875200.

The previous prime is 68380490159. The next prime is 68380490183. The reversal of 68380490178 is 87109408386.

68380490178 is a `hidden beast` number, since 6 + 8 + 3 + 80 + 490 + 1 + 78 = 666.

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 71 ways as a sum of consecutive naturals, for example, 25693 + ... + 370703.

It is an arithmetic number, because the mean of its divisors is an integer number (1391893412).

Almost surely, 2^68380490178 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68380490178, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100216325664).

68380490178 is an abundant number, since it is smaller than the sum of its proper divisors (132052161150).

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

68380490178 is a wasteful number, since it uses less digits than its factorization.

68380490178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345061 (or 345047 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 54.

The spelling of 68380490178 in words is "sixty-eight billion, three hundred eighty million, four hundred ninety thousand, one hundred seventy-eight".