68965968523 has 4 divisors (see below), whose sum is σ = 72595756360. Its totient is φ = 65336180688.

The previous prime is 68965968521. The next prime is 68965968527. The reversal of 68965968523 is 32586956986.

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

It is not a de Polignac number, because 68965968523 - 2¹ = 68965968521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68965968521) 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, 1814893890 + ... + 1814893927.

It is an arithmetic number, because the mean of its divisors is an integer number (18148939090).

Almost surely, 2^68965968523 is an apocalyptic number.

68965968523 is a deficient number, since it is larger than the sum of its proper divisors (3629787837).

68965968523 is a wasteful number, since it uses less digits than its factorization.

68965968523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3629787836.

The product of its digits is 167961600, while the sum is 67.

The spelling of 68965968523 in words is "sixty-eight billion, nine hundred sixty-five million, nine hundred sixty-eight thousand, five hundred twenty-three".