265591872019 has 2 divisors, whose sum is σ = 265591872020. Its totient is φ = 265591872018.

The previous prime is 265591871999. The next prime is 265591872023. The reversal of 265591872019 is 910278195562.

265591872019 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 265591872019 - 2¹⁵ = 265591839251 is a prime.

It is a super-2 number, since 2×265591872019² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (265591872319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132795936009 + 132795936010.

It is an arithmetic number, because the mean of its divisors is an integer number (132795936010).

Almost surely, 2^265591872019 is an apocalyptic number.

265591872019 is a deficient number, since it is larger than the sum of its proper divisors (1).

265591872019 is an equidigital number, since it uses as much as digits as its factorization.

265591872019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2721600, while the sum is 55.

The spelling of 265591872019 in words is "two hundred sixty-five billion, five hundred ninety-one million, eight hundred seventy-two thousand, nineteen".