68802357989 has 2 divisors, whose sum is σ = 68802357990. Its totient is φ = 68802357988.

The previous prime is 68802357983. The next prime is 68802358019. The reversal of 68802357989 is 98975320886.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63680522500 + 5121835489 = 252350^2 + 71567^2 .

It is a cyclic number.

It is not a de Polignac number, because 68802357989 - 2²⁸ = 68533922533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68802357983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34401178994 + 34401178995.

It is an arithmetic number, because the mean of its divisors is an integer number (34401178995).

Almost surely, 2^68802357989 is an apocalyptic number.

It is an amenable number.

68802357989 is a deficient number, since it is larger than the sum of its proper divisors (1).

68802357989 is an equidigital number, since it uses as much as digits as its factorization.

68802357989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52254720, while the sum is 65.

The spelling of 68802357989 in words is "sixty-eight billion, eight hundred two million, three hundred fifty-seven thousand, nine hundred eighty-nine".