265426453620091 has 2 divisors, whose sum is σ = 265426453620092. Its totient is φ = 265426453620090.

The previous prime is 265426453620079. The next prime is 265426453620121. The reversal of 265426453620091 is 190026354624562.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 265426453620091 - 2⁵ = 265426453620059 is a prime.

It is not a weakly prime, because it can be changed into another prime (265426453620191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132713226810045 + 132713226810046.

It is an arithmetic number, because the mean of its divisors is an integer number (132713226810046).

Almost surely, 2^{265426453620091} is an apocalyptic number.

265426453620091 is a deficient number, since it is larger than the sum of its proper divisors (1).

265426453620091 is an equidigital number, since it uses as much as digits as its factorization.

265426453620091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18662400, while the sum is 55.

The spelling of 265426453620091 in words is "two hundred sixty-five trillion, four hundred twenty-six billion, four hundred fifty-three million, six hundred twenty thousand, ninety-one".