269661861643 has 2 divisors, whose sum is σ = 269661861644. Its totient is φ = 269661861642.

The previous prime is 269661861629. The next prime is 269661861647. The reversal of 269661861643 is 346168166962.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 269661861643 - 2²⁹ = 269124990731 is a prime.

It is not a weakly prime, because it can be changed into another prime (269661861647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134830930821 + 134830930822.

It is an arithmetic number, because the mean of its divisors is an integer number (134830930822).

Almost surely, 2^269661861643 is an apocalyptic number.

269661861643 is a deficient number, since it is larger than the sum of its proper divisors (1).

269661861643 is an equidigital number, since it uses as much as digits as its factorization.

269661861643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13436928, while the sum is 58.

The spelling of 269661861643 in words is "two hundred sixty-nine billion, six hundred sixty-one million, eight hundred sixty-one thousand, six hundred forty-three".