68020268663 has 16 divisors (see below), whose sum is σ = 70865383680. Its totient is φ = 65237054400.

The previous prime is 68020268633. The next prime is 68020268669. The reversal of 68020268663 is 36686202086.

It is a cyclic number.

It is not a de Polignac number, because 68020268663 - 2⁶ = 68020268599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68020268669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 976448 + ... + 1043786.

It is an arithmetic number, because the mean of its divisors is an integer number (4429086480).

Almost surely, 2^68020268663 is an apocalyptic number.

68020268663 is a deficient number, since it is larger than the sum of its proper divisors (2845115017).

68020268663 is a wasteful number, since it uses less digits than its factorization.

68020268663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67798.

The product of its (nonzero) digits is 995328, while the sum is 47.

The spelling of 68020268663 in words is "sixty-eight billion, twenty million, two hundred sixty-eight thousand, six hundred sixty-three".