68705281513 has 8 divisors (see below), whose sum is σ = 74966512320. Its totient is φ = 62446600080.

The previous prime is 68705281507. The next prime is 68705281577. The reversal of 68705281513 is 31518250786.

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

It is a cyclic number.

It is not a de Polignac number, because 68705281513 - 2¹³ = 68705273321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68705281583) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 580770 + ... + 688987.

It is an arithmetic number, because the mean of its divisors is an integer number (9370814040).

Almost surely, 2^68705281513 is an apocalyptic number.

It is an amenable number.

68705281513 is a deficient number, since it is larger than the sum of its proper divisors (6261230807).

68705281513 is a wasteful number, since it uses less digits than its factorization.

68705281513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1274687.

The product of its (nonzero) digits is 403200, while the sum is 46.

The spelling of 68705281513 in words is "sixty-eight billion, seven hundred five million, two hundred eighty-one thousand, five hundred thirteen".