68483532778 has 16 divisors (see below), whose sum is σ = 109613157120. Its totient is φ = 31995189216.

The previous prime is 68483532763. The next prime is 68483532839. The reversal of 68483532778 is 87723538486.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12341050 + ... + 12346597.

It is an arithmetic number, because the mean of its divisors is an integer number (6850822320).

Almost surely, 2^68483532778 is an apocalyptic number.

68483532778 is a deficient number, since it is larger than the sum of its proper divisors (41129624342).

68483532778 is a wasteful number, since it uses less digits than its factorization.

68483532778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24687741.

The product of its digits is 54190080, while the sum is 61.

The spelling of 68483532778 in words is "sixty-eight billion, four hundred eighty-three million, five hundred thirty-two thousand, seven hundred seventy-eight".