68143735952 has 20 divisors (see below), whose sum is σ = 139794870636. Its totient is φ = 32067640320.

The previous prime is 68143735937. The next prime is 68143735963. The reversal of 68143735952 is 25953734186.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 54026494096 + 14117241856 = 232436^2 + 118816^2 .

It is a junction number, because it is equal to n+sod(n) for n = 68143735894 and 68143735903.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125263949 + ... + 125264492.

Almost surely, 2^68143735952 is an apocalyptic number.

It is an amenable number.

68143735952 is an abundant number, since it is smaller than the sum of its proper divisors (71651134684).

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

68143735952 is a wasteful number, since it uses less digits than its factorization.

68143735952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250528466 (or 250528460 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 53.

The spelling of 68143735952 in words is "sixty-eight billion, one hundred forty-three million, seven hundred thirty-five thousand, nine hundred fifty-two".