68520940744 has 8 divisors (see below), whose sum is σ = 128476763910. Its totient is φ = 34260470368.

The previous prime is 68520940739. The next prime is 68520940801. The reversal of 68520940744 is 44704902586.

68520940744 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 only one way, i.e., 66579480900 + 1941459844 = 258030^2 + 44062^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4282558789 + ... + 4282558804.

Almost surely, 2^68520940744 is an apocalyptic number.

It is an amenable number.

68520940744 is a deficient number, since it is larger than the sum of its proper divisors (59955823166).

68520940744 is a wasteful number, since it uses less digits than its factorization.

68520940744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8565117599 (or 8565117595 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 49.

The spelling of 68520940744 in words is "sixty-eight billion, five hundred twenty million, nine hundred forty thousand, seven hundred forty-four".