68247332672 has 14 divisors (see below), whose sum is σ = 135428300898. Its totient is φ = 34123666304.

The previous prime is 68247332623. The next prime is 68247332687. The reversal of 68247332672 is 27623374286.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 49896837376 + 18350495296 = 223376^2 + 135464^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 68247332672.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 533182223 + ... + 533182350.

Almost surely, 2^68247332672 is an apocalyptic number.

It is an amenable number.

68247332672 is a deficient number, since it is larger than the sum of its proper divisors (67180968226).

68247332672 is a wasteful number, since it uses less digits than its factorization.

68247332672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1066364585 (or 1066364575 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 50.

The spelling of 68247332672 in words is "sixty-eight billion, two hundred forty-seven million, three hundred thirty-two thousand, six hundred seventy-two".