68841042864137 has 4 divisors (see below), whose sum is σ = 72464255646480. Its totient is φ = 65217830081796.

The previous prime is 68841042864107. The next prime is 68841042864157. The reversal of 68841042864137 is 73146824014886.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 68841042864137 - 2¹⁰ = 68841042863113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68841042864137.

It is not an unprimeable number, because it can be changed into a prime (68841042864107) 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, 1811606391143 + ... + 1811606391180.

It is an arithmetic number, because the mean of its divisors is an integer number (18116063911620).

Almost surely, 2^{68841042864137} is an apocalyptic number.

It is an amenable number.

68841042864137 is a deficient number, since it is larger than the sum of its proper divisors (3623212782343).

68841042864137 is a wasteful number, since it uses less digits than its factorization.

68841042864137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3623212782342.

The product of its (nonzero) digits is 49545216, while the sum is 62.

The spelling of 68841042864137 in words is "sixty-eight trillion, eight hundred forty-one billion, forty-two million, eight hundred sixty-four thousand, one hundred thirty-seven".