68311011584 has 36 divisors (see below), whose sum is σ = 137887309980. Its totient is φ = 33771724800.

The previous prime is 68311011541. The next prime is 68311011599. The reversal of 68311011584 is 48511011386.

68311011584 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 32302153984 + 36008857600 = 179728^2 + 189760^2 .

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, 1476317 + ... + 1521884.

It is an arithmetic number, because the mean of its divisors is an integer number (3830203055).

Almost surely, 2^68311011584 is an apocalyptic number.

68311011584 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

68311011584 is an abundant number, since it is smaller than the sum of its proper divisors (69576298396).

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

68311011584 is an equidigital number, since it uses as much as digits as its factorization.

68311011584 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2998306 (or 2998292 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 38.

The spelling of 68311011584 in words is "sixty-eight billion, three hundred eleven million, eleven thousand, five hundred eighty-four".