68486713505 has 8 divisors (see below), whose sum is σ = 93924635712. Its totient is φ = 46962317808.

The previous prime is 68486713487. The next prime is 68486713523. The reversal of 68486713505 is 50531768486.

It is an interprime number because it is at equal distance from previous prime (68486713487) and next prime (68486713523).

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

It is not a de Polignac number, because 68486713505 - 2²⁶ = 68419604641 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 978381587 + ... + 978381656.

It is an arithmetic number, because the mean of its divisors is an integer number (11740579464).

Almost surely, 2^68486713505 is an apocalyptic number.

It is an amenable number.

68486713505 is a deficient number, since it is larger than the sum of its proper divisors (25437922207).

68486713505 is a wasteful number, since it uses less digits than its factorization.

68486713505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1956763255.

The product of its (nonzero) digits is 4838400, while the sum is 53.

The spelling of 68486713505 in words is "sixty-eight billion, four hundred eighty-six million, seven hundred thirteen thousand, five hundred five".