68508394413 has 16 divisors (see below), whose sum is σ = 93258364416. Its totient is φ = 44722059840.

The previous prime is 68508394403. The next prime is 68508394459. The reversal of 68508394413 is 31449380586.

It is not a de Polignac number, because 68508394413 - 2⁴ = 68508394397 is a prime.

It is a super-2 number, since 2×68508394413² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68508394403) 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 15 ways as a sum of consecutive naturals, for example, 798570 + ... + 880187.

It is an arithmetic number, because the mean of its divisors is an integer number (5828647776).

Almost surely, 2^68508394413 is an apocalyptic number.

It is an amenable number.

68508394413 is a deficient number, since it is larger than the sum of its proper divisors (24749970003).

68508394413 is a wasteful number, since it uses less digits than its factorization.

68508394413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1679044.

The product of its (nonzero) digits is 2488320, while the sum is 51.

The spelling of 68508394413 in words is "sixty-eight billion, five hundred eight million, three hundred ninety-four thousand, four hundred thirteen".