265640510254133 has 16 divisors (see below), whose sum is σ = 307247788498560. Its totient is φ = 224947907156736.

The previous prime is 265640510254127. The next prime is 265640510254153. The reversal of 265640510254133 is 331452015046562.

It is a cyclic number.

It is not a de Polignac number, because 265640510254133 - 2²⁶ = 265640443145269 is a prime.

It is a super-2 number, since 2×265640510254133² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265640510254153) 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 in 15 ways as a sum of consecutive naturals, for example, 311208833 + ... + 312061241.

It is an arithmetic number, because the mean of its divisors is an integer number (19202986781160).

Almost surely, 2^{265640510254133} is an apocalyptic number.

It is an amenable number.

265640510254133 is a deficient number, since it is larger than the sum of its proper divisors (41607278244427).

265640510254133 is an equidigital number, since it uses as much as digits as its factorization.

265640510254133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1388876.

The product of its (nonzero) digits is 2592000, while the sum is 47.

The spelling of 265640510254133 in words is "two hundred sixty-five trillion, six hundred forty billion, five hundred ten million, two hundred fifty-four thousand, one hundred thirty-three".