68910589439 has 4 divisors (see below), whose sum is σ = 69015158520. Its totient is φ = 68806020360.

The previous prime is 68910589367. The next prime is 68910589441. The reversal of 68910589439 is 93498501986.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68910589439 - 2³² = 64615622143 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 (68910589459) 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, 52283552 + ... + 52284869.

It is an arithmetic number, because the mean of its divisors is an integer number (17253789630).

Almost surely, 2^68910589439 is an apocalyptic number.

68910589439 is a deficient number, since it is larger than the sum of its proper divisors (104569081).

68910589439 is a wasteful number, since it uses less digits than its factorization.

68910589439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104569080.

The product of its (nonzero) digits is 16796160, while the sum is 62.

The spelling of 68910589439 in words is "sixty-eight billion, nine hundred ten million, five hundred eighty-nine thousand, four hundred thirty-nine".