68072000638 has 8 divisors (see below), whose sum is σ = 103338218088. Its totient is φ = 33625927944.

The previous prime is 68072000599. The next prime is 68072000639. The reversal of 68072000638 is 83600027086.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 68072000638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68072000639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205035981 + ... + 205036312.

It is an arithmetic number, because the mean of its divisors is an integer number (12917277261).

Almost surely, 2^68072000638 is an apocalyptic number.

68072000638 is a deficient number, since it is larger than the sum of its proper divisors (35266217450).

68072000638 is a wasteful number, since it uses less digits than its factorization.

68072000638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410072378.

The product of its (nonzero) digits is 96768, while the sum is 40.

The spelling of 68072000638 in words is "sixty-eight billion, seventy-two million, six hundred thirty-eight", and thus it is an aban number.