67622657261 has 2 divisors, whose sum is σ = 67622657262. Its totient is φ = 67622657260.

The previous prime is 67622657251. The next prime is 67622657279. The reversal of 67622657261 is 16275622676.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45475562500 + 22147094761 = 213250^2 + 148819^2 .

It is a cyclic number.

It is not a de Polignac number, because 67622657261 - 2²² = 67618462957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67622657251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33811328630 + 33811328631.

It is an arithmetic number, because the mean of its divisors is an integer number (33811328631).

Almost surely, 2^67622657261 is an apocalyptic number.

It is an amenable number.

67622657261 is a deficient number, since it is larger than the sum of its proper divisors (1).

67622657261 is an equidigital number, since it uses as much as digits as its factorization.

67622657261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2540160, while the sum is 50.

The spelling of 67622657261 in words is "sixty-seven billion, six hundred twenty-two million, six hundred fifty-seven thousand, two hundred sixty-one".