68705315485 has 4 divisors (see below), whose sum is σ = 82446378588. Its totient is φ = 54964252384.

The previous prime is 68705315447. The next prime is 68705315501. The reversal of 68705315485 is 58451350786.

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

It can be written as a sum of positive squares in 2 ways, for example, as 25934525764 + 42770789721 = 161042^2 + 206811^2 .

It is a cyclic number.

It is not a de Polignac number, because 68705315485 - 2¹¹ = 68705313437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6870531544 + ... + 6870531553.

It is an arithmetic number, because the mean of its divisors is an integer number (20611594647).

Almost surely, 2^68705315485 is an apocalyptic number.

It is an amenable number.

68705315485 is a deficient number, since it is larger than the sum of its proper divisors (13741063103).

68705315485 is a wasteful number, since it uses less digits than its factorization.

68705315485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13741063102.

The product of its (nonzero) digits is 4032000, while the sum is 52.

The spelling of 68705315485 in words is "sixty-eight billion, seven hundred five million, three hundred fifteen thousand, four hundred eighty-five".