68506494189 has 16 divisors (see below), whose sum is σ = 104827637760. Its totient is φ = 38982772080.

The previous prime is 68506494181. The next prime is 68506494281. The reversal of 68506494189 is 98149460586.

It is not a de Polignac number, because 68506494189 - 2³ = 68506494181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68506494181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6819697 + ... + 6829734.

It is an arithmetic number, because the mean of its divisors is an integer number (6551727360).

Almost surely, 2^68506494189 is an apocalyptic number.

It is an amenable number.

68506494189 is a deficient number, since it is larger than the sum of its proper divisors (36321143571).

68506494189 is a wasteful number, since it uses less digits than its factorization.

68506494189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13649680.

The product of its (nonzero) digits is 14929920, while the sum is 60.

The spelling of 68506494189 in words is "sixty-eight billion, five hundred six million, four hundred ninety-four thousand, one hundred eighty-nine".