68978590080178 has 64 divisors (see below), whose sum is σ = 109552795176960. Its totient is φ = 32524592486400.

The previous prime is 68978590080163. The next prime is 68978590080187. The reversal of 68978590080178 is 87108009587986.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1055444350 + ... + 1055509702.

It is an arithmetic number, because the mean of its divisors is an integer number (1711762424640).

Almost surely, 2^{68978590080178} is an apocalyptic number.

68978590080178 is a deficient number, since it is larger than the sum of its proper divisors (40574205096782).

68978590080178 is a wasteful number, since it uses less digits than its factorization.

68978590080178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67003.

The product of its (nonzero) digits is 487710720, while the sum is 76.

The spelling of 68978590080178 in words is "sixty-eight trillion, nine hundred seventy-eight billion, five hundred ninety million, eighty thousand, one hundred seventy-eight".