68072000639 has 2 divisors, whose sum is σ = 68072000640. Its totient is φ = 68072000638.

The previous prime is 68072000599. The next prime is 68072000681. The reversal of 68072000639 is 93600027086.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68072000639 - 2¹² = 68071996543 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68072000596 and 68072000605.

It is a congruent number.

It is a weakly prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34036000319 + 34036000320.

It is an arithmetic number, because the mean of its divisors is an integer number (34036000320).

Almost surely, 2^68072000639 is an apocalyptic number.

68072000639 is a deficient number, since it is larger than the sum of its proper divisors (1).

68072000639 is an equidigital number, since it uses as much as digits as its factorization.

68072000639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 41.

The spelling of 68072000639 in words is "sixty-eight billion, seventy-two million, six hundred thirty-nine", and thus it is an aban number.