265940134291 has 16 divisors (see below), whose sum is σ = 288664836768. Its totient is φ = 243540460800.

The previous prime is 265940134237. The next prime is 265940134297. The reversal of 265940134291 is 192431049562.

It is not a de Polignac number, because 265940134291 - 2⁹ = 265940133779 is a prime.

It is a super-2 number, since 2×265940134291² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (265940134297) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6589225 + ... + 6629461.

It is an arithmetic number, because the mean of its divisors is an integer number (18041552298).

Almost surely, 2^265940134291 is an apocalyptic number.

265940134291 is a deficient number, since it is larger than the sum of its proper divisors (22724702477).

265940134291 is a wasteful number, since it uses less digits than its factorization.

265940134291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44262.

The product of its (nonzero) digits is 466560, while the sum is 46.

The spelling of 265940134291 in words is "two hundred sixty-five billion, nine hundred forty million, one hundred thirty-four thousand, two hundred ninety-one".