68504108691 has 8 divisors (see below), whose sum is σ = 91382047120. Its totient is φ = 45647788032.

The previous prime is 68504108677. The next prime is 68504108693. The reversal of 68504108691 is 19680140586.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 68504108691 - 2¹⁰ = 68504107667 is a prime.

It is a super-3 number, since 3×68504108691³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68504108691.

It is not an unprimeable number, because it can be changed into a prime (68504108693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5397046 + ... + 5409723.

It is an arithmetic number, because the mean of its divisors is an integer number (11422755890).

Almost surely, 2^68504108691 is an apocalyptic number.

68504108691 is a deficient number, since it is larger than the sum of its proper divisors (22877938429).

68504108691 is a wasteful number, since it uses less digits than its factorization.

68504108691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10808885.

The product of its (nonzero) digits is 414720, while the sum is 48.

The spelling of 68504108691 in words is "sixty-eight billion, five hundred four million, one hundred eight thousand, six hundred ninety-one".