68415247240 has 16 divisors (see below), whose sum is σ = 153934306380. Its totient is φ = 27366098880.

The previous prime is 68415247207. The next prime is 68415247249. The reversal of 68415247240 is 4274251486.

It can be written as a sum of positive squares in 2 ways, for example, as 66908099556 + 1507147684 = 258666^2 + 38822^2 .

It is not an unprimeable number, because it can be changed into a prime (68415247249) 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 3 ways as a sum of consecutive naturals, for example, 855190551 + ... + 855190630.

Almost surely, 2^68415247240 is an apocalyptic number.

It is an amenable number.

68415247240 is an abundant number, since it is smaller than the sum of its proper divisors (85519059140).

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

68415247240 is a wasteful number, since it uses less digits than its factorization.

68415247240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1710381192 (or 1710381188 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 43.

The spelling of 68415247240 in words is "sixty-eight billion, four hundred fifteen million, two hundred forty-seven thousand, two hundred forty".