68667042040 has 32 divisors (see below), whose sum is σ = 155363994000. Its totient is φ = 27313368064.

The previous prime is 68667041987. The next prime is 68667042043. The reversal of 68667042040 is 4024076686.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68667042043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4788025 + ... + 4802344.

Almost surely, 2^68667042040 is an apocalyptic number.

It is an amenable number.

68667042040 is an abundant number, since it is smaller than the sum of its proper divisors (86696951960).

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

68667042040 is a wasteful number, since it uses less digits than its factorization.

68667042040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9590559 (or 9590555 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 43.

The spelling of 68667042040 in words is "sixty-eight billion, six hundred sixty-seven million, forty-two thousand, forty".