68422155253 has 2 divisors, whose sum is σ = 68422155254. Its totient is φ = 68422155252.

The previous prime is 68422155247. The next prime is 68422155257. The reversal of 68422155253 is 35255122486.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44851615524 + 23570539729 = 211782^2 + 153527^2 .

It is a cyclic number.

It is not a de Polignac number, because 68422155253 - 2²¹ = 68420058101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68422155257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34211077626 + 34211077627.

It is an arithmetic number, because the mean of its divisors is an integer number (34211077627).

Almost surely, 2^68422155253 is an apocalyptic number.

It is an amenable number.

68422155253 is a deficient number, since it is larger than the sum of its proper divisors (1).

68422155253 is an equidigital number, since it uses as much as digits as its factorization.

68422155253 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 576000, while the sum is 43.

The spelling of 68422155253 in words is "sixty-eight billion, four hundred twenty-two million, one hundred fifty-five thousand, two hundred fifty-three".