265916272045 has 8 divisors (see below), whose sum is σ = 319488203160. Its totient is φ = 212473899840.

The previous prime is 265916272043. The next prime is 265916272049. The reversal of 265916272045 is 540272619562.

It can be written as a sum of positive squares in 4 ways, for example, as 17639292969 + 248276979076 = 132813^2 + 498274^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 265916272045 - 2¹ = 265916272043 is a prime.

It is a super-4 number, since 4×265916272045⁴ (a number of 47 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 265916272045.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265916272043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32385210 + ... + 32393419.

It is an arithmetic number, because the mean of its divisors is an integer number (39936025395).

Almost surely, 2^265916272045 is an apocalyptic number.

It is an amenable number.

265916272045 is a deficient number, since it is larger than the sum of its proper divisors (53571931115).

265916272045 is an equidigital number, since it uses as much as digits as its factorization.

265916272045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64779455.

The product of its (nonzero) digits is 1814400, while the sum is 49.

The spelling of 265916272045 in words is "two hundred sixty-five billion, nine hundred sixteen million, two hundred seventy-two thousand, forty-five".