68522889189 has 4 divisors (see below), whose sum is σ = 91363852256. Its totient is φ = 45681926124.

The previous prime is 68522889161. The next prime is 68522889199. The reversal of 68522889189 is 98198822586.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 68522889189 - 2⁵ = 68522889157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68522889109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11420481529 + ... + 11420481534.

It is an arithmetic number, because the mean of its divisors is an integer number (22840963064).

Almost surely, 2^68522889189 is an apocalyptic number.

It is an amenable number.

68522889189 is a deficient number, since it is larger than the sum of its proper divisors (22840963067).

68522889189 is a wasteful number, since it uses less digits than its factorization.

68522889189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22840963066.

The product of its digits is 39813120, while the sum is 66.

The spelling of 68522889189 in words is "sixty-eight billion, five hundred twenty-two million, eight hundred eighty-nine thousand, one hundred eighty-nine".