68128740004 has 12 divisors (see below), whose sum is σ = 128396471644. Its totient is φ = 31444033824.

The previous prime is 68128739969. The next prime is 68128740011. The reversal of 68128740004 is 40004782186.

68128740004 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 40272462400 + 27856277604 = 200680^2 + 166902^2 .

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

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, 655083987 + ... + 655084090.

Almost surely, 2^68128740004 is an apocalyptic number.

It is an amenable number.

68128740004 is a deficient number, since it is larger than the sum of its proper divisors (60267731640).

68128740004 is a wasteful number, since it uses less digits than its factorization.

68128740004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1310168094 (or 1310168092 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 40.

The spelling of 68128740004 in words is "sixty-eight billion, one hundred twenty-eight million, seven hundred forty thousand, four".