68544253153 has 2 divisors, whose sum is σ = 68544253154. Its totient is φ = 68544253152.

The previous prime is 68544253133. The next prime is 68544253199. The reversal of 68544253153 is 35135244586.

It is a happy number.

It is an a-pointer prime, because the next prime (68544253199) can be obtained adding 68544253153 to its sum of digits (46).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65409597009 + 3134656144 = 255753^2 + 55988^2 .

It is a cyclic number.

It is not a de Polignac number, because 68544253153 - 2¹³ = 68544244961 is a prime.

It is not a weakly prime, because it can be changed into another prime (68544253133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34272126576 + 34272126577.

It is an arithmetic number, because the mean of its divisors is an integer number (34272126577).

Almost surely, 2^68544253153 is an apocalyptic number.

It is an amenable number.

68544253153 is a deficient number, since it is larger than the sum of its proper divisors (1).

68544253153 is an equidigital number, since it uses as much as digits as its factorization.

68544253153 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728000, while the sum is 46.

The spelling of 68544253153 in words is "sixty-eight billion, five hundred forty-four million, two hundred fifty-three thousand, one hundred fifty-three".