68915175289 has 9 divisors (see below), whose sum is σ = 69819572613. Its totient is φ = 68022354972.

The previous prime is 68915175257. The next prime is 68915175293. The reversal of 68915175289 is 98257151986.

The square root of 68915175289 is 262517.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 68915175289 - 2⁵ = 68915175257 is a prime.

It is a super-2 number, since 2×68915175289² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

Its product of digits (10886400) is a multiple of the sum of its prime divisors (3402).

It is not an unprimeable number, because it can be changed into a prime (68915175209) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 20737182 + ... + 20740504.

Almost surely, 2^68915175289 is an apocalyptic number.

68915175289 is the 262517-th square number.

68915175289 is the 131259-th centered octagonal number.

It is an amenable number.

68915175289 is a deficient number, since it is larger than the sum of its proper divisors (904397324).

68915175289 is an frugal number, since it uses more digits than its factorization.

68915175289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6804 (or 3402 counting only the distinct ones).

The product of its digits is 10886400, while the sum is 61.

The spelling of 68915175289 in words is "sixty-eight billion, nine hundred fifteen million, one hundred seventy-five thousand, two hundred eighty-nine".