265145260041601 has 2 divisors, whose sum is σ = 265145260041602. Its totient is φ = 265145260041600.

The previous prime is 265145260041589. The next prime is 265145260041671. The reversal of 265145260041601 is 106140062541562.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 262059405686001 + 3085854355600 = 16188249^2 + 1756660^2 .

It is a cyclic number.

It is not a de Polignac number, because 265145260041601 - 2⁵ = 265145260041569 is a prime.

It is a super-3 number, since 3×265145260041601³ (a number of 44 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (265145260041671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132572630020800 + 132572630020801.

It is an arithmetic number, because the mean of its divisors is an integer number (132572630020801).

Almost surely, 2^{265145260041601} is an apocalyptic number.

It is an amenable number.

265145260041601 is a deficient number, since it is larger than the sum of its proper divisors (1).

265145260041601 is an equidigital number, since it uses as much as digits as its factorization.

265145260041601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 345600, while the sum is 43.

The spelling of 265145260041601 in words is "two hundred sixty-five trillion, one hundred forty-five billion, two hundred sixty million, forty-one thousand, six hundred one".