265143062643919 has 2 divisors, whose sum is σ = 265143062643920. Its totient is φ = 265143062643918.

The previous prime is 265143062643917. The next prime is 265143062644037. The reversal of 265143062643919 is 919346260341562.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 265143062643919 - 2¹ = 265143062643917 is a prime.

It is a super-2 number, since 2×265143062643919² (a number of 30 digits) contains 22 as substring.

Together with 265143062643917, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (265143062643917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132571531321959 + 132571531321960.

It is an arithmetic number, because the mean of its divisors is an integer number (132571531321960).

Almost surely, 2^{265143062643919} is an apocalyptic number.

265143062643919 is a deficient number, since it is larger than the sum of its proper divisors (1).

265143062643919 is an equidigital number, since it uses as much as digits as its factorization.

265143062643919 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50388480, while the sum is 61.

The spelling of 265143062643919 in words is "two hundred sixty-five trillion, one hundred forty-three billion, sixty-two million, six hundred forty-three thousand, nine hundred nineteen".