265649275536 has 20 divisors (see below), whose sum is σ = 686260628592. Its totient is φ = 88549758496.

The previous prime is 265649275519. The next prime is 265649275571. The reversal of 265649275536 is 635572946562.

It is a self number, because there is not a number n which added to its sum of digits gives 265649275536.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2767179906 + ... + 2767180001.

Almost surely, 2^265649275536 is an apocalyptic number.

It is an amenable number.

265649275536 is an abundant number, since it is smaller than the sum of its proper divisors (420611353056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

265649275536 is a wasteful number, since it uses less digits than its factorization.

265649275536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5534359918 (or 5534359912 counting only the distinct ones).

The product of its digits is 81648000, while the sum is 60.

The spelling of 265649275536 in words is "two hundred sixty-five billion, six hundred forty-nine million, two hundred seventy-five thousand, five hundred thirty-six".