68538536844 has 72 divisors (see below), whose sum is σ = 164183139120. Its totient is φ = 22251431808.

The previous prime is 68538536839. The next prime is 68538536849. The reversal of 68538536844 is 44863583586.

It is an interprime number because it is at equal distance from previous prime (68538536839) and next prime (68538536849).

It is not an unprimeable number, because it can be changed into a prime (68538536849) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4545622 + ... + 4560674.

Almost surely, 2^68538536844 is an apocalyptic number.

It is an amenable number.

68538536844 is an abundant number, since it is smaller than the sum of its proper divisors (95644602276).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68538536844 is a wasteful number, since it uses less digits than its factorization.

68538536844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15287 (or 15226 counting only the distinct ones).

The product of its digits is 66355200, while the sum is 60.

The spelling of 68538536844 in words is "sixty-eight billion, five hundred thirty-eight million, five hundred thirty-six thousand, eight hundred forty-four".