68207353408 has 28 divisors (see below), whose sum is σ = 139007051932. Its totient is φ = 33181954560.

The previous prime is 68207353399. The next prime is 68207353447. The reversal of 68207353408 is 80435370286.

It can be written as a sum of positive squares in 2 ways, for example, as 24077108224 + 44130245184 = 155168^2 + 210072^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14399523 + ... + 14404258.

It is an arithmetic number, because the mean of its divisors is an integer number (4964537569).

Almost surely, 2^68207353408 is an apocalyptic number.

It is an amenable number.

68207353408 is an abundant number, since it is smaller than the sum of its proper divisors (70799698524).

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

68207353408 is a wasteful number, since it uses less digits than its factorization.

68207353408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28803830 (or 28803820 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 46.

The spelling of 68207353408 in words is "sixty-eight billion, two hundred seven million, three hundred fifty-three thousand, four hundred eight".