68618326565 has 16 divisors (see below), whose sum is σ = 84111851520. Its totient is φ = 53715252480.

The previous prime is 68618326559. The next prime is 68618326583. The reversal of 68618326565 is 56562381686.

It is not a de Polignac number, because 68618326565 - 2⁶ = 68618326501 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 68618326565.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1174445 + ... + 1231485.

It is an arithmetic number, because the mean of its divisors is an integer number (5256990720).

Almost surely, 2^68618326565 is an apocalyptic number.

It is an amenable number.

68618326565 is a deficient number, since it is larger than the sum of its proper divisors (15493524955).

68618326565 is a wasteful number, since it uses less digits than its factorization.

68618326565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62212.

The product of its digits is 12441600, while the sum is 56.

The spelling of 68618326565 in words is "sixty-eight billion, six hundred eighteen million, three hundred twenty-six thousand, five hundred sixty-five".