68141052685 has 4 divisors (see below), whose sum is σ = 81769263228. Its totient is φ = 54512842144.

The previous prime is 68141052619. The next prime is 68141052697. The reversal of 68141052685 is 58625014186.

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 45380502729 + 22760549956 = 213027^2 + 150866^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68141052685 is a prime.

It is a super-2 number, since 2×68141052685² (a number of 22 digits) contains 22 as substring.

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, 6814105264 + ... + 6814105273.

It is an arithmetic number, because the mean of its divisors is an integer number (20442315807).

Almost surely, 2^68141052685 is an apocalyptic number.

It is an amenable number.

68141052685 is a deficient number, since it is larger than the sum of its proper divisors (13628210543).

68141052685 is a wasteful number, since it uses less digits than its factorization.

68141052685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13628210542.

The product of its (nonzero) digits is 460800, while the sum is 46.

The spelling of 68141052685 in words is "sixty-eight billion, one hundred forty-one million, fifty-two thousand, six hundred eighty-five".