68575012505 has 16 divisors (see below), whose sum is σ = 87297897744. Its totient is φ = 51533813760.

The previous prime is 68575012501. The next prime is 68575012511. The reversal of 68575012505 is 50521057586.

It can be written as a sum of positive squares in 8 ways, for example, as 5888874121 + 62686138384 = 76739^2 + 250372^2 .

It is not a de Polignac number, because 68575012505 - 2² = 68575012501 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68575012501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 729962 + ... + 818531.

It is an arithmetic number, because the mean of its divisors is an integer number (5456118609).

Almost surely, 2^68575012505 is an apocalyptic number.

It is an amenable number.

68575012505 is a deficient number, since it is larger than the sum of its proper divisors (18722885239).

68575012505 is a wasteful number, since it uses less digits than its factorization.

68575012505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1549036.

The product of its (nonzero) digits is 420000, while the sum is 44.

The spelling of 68575012505 in words is "sixty-eight billion, five hundred seventy-five million, twelve thousand, five hundred five".