68285277440 has 36 divisors (see below), whose sum is σ = 163564581684. Its totient is φ = 27314110464.

The previous prime is 68285277427. The next prime is 68285277469. The reversal of 68285277440 is 4477258286.

It can be written as a sum of positive squares in 2 ways, for example, as 19582084096 + 48703193344 = 139936^2 + 220688^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26672657 + ... + 26675216.

Almost surely, 2^68285277440 is an apocalyptic number.

It is an amenable number.

68285277440 is an abundant number, since it is smaller than the sum of its proper divisors (95279304244).

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

68285277440 is an equidigital number, since it uses as much as digits as its factorization.

68285277440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53347894 (or 53347880 counting only the distinct ones).

The product of its (nonzero) digits is 6021120, while the sum is 53.

The spelling of 68285277440 in words is "sixty-eight billion, two hundred eighty-five million, two hundred seventy-seven thousand, four hundred forty".