68778391179 has 8 divisors (see below), whose sum is σ = 91801362240. Its totient is φ = 45803840456.

The previous prime is 68778391151. The next prime is 68778391237. The reversal of 68778391179 is 97119387786.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68778391179 - 2¹³ = 68778382987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68778391109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12101769 + ... + 12107450.

It is an arithmetic number, because the mean of its divisors is an integer number (11475170280).

Almost surely, 2^68778391179 is an apocalyptic number.

68778391179 is a deficient number, since it is larger than the sum of its proper divisors (23022971061).

68778391179 is a wasteful number, since it uses less digits than its factorization.

68778391179 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24210169.

The product of its digits is 32006016, while the sum is 66.

The spelling of 68778391179 in words is "sixty-eight billion, seven hundred seventy-eight million, three hundred ninety-one thousand, one hundred seventy-nine".