265881513011 has 8 divisors (see below), whose sum is σ = 269532659760. Its totient is φ = 262230607872.

The previous prime is 265881512989. The next prime is 265881513061. The reversal of 265881513011 is 110315188562.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-265881513011 is a prime.

It is a super-2 number, since 2×265881513011² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 265881513011.

It is not an unprimeable number, because it can be changed into a prime (265881513061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4276796 + ... + 4338518.

It is an arithmetic number, because the mean of its divisors is an integer number (33691582470).

Almost surely, 2^265881513011 is an apocalyptic number.

265881513011 is a deficient number, since it is larger than the sum of its proper divisors (3651146749).

265881513011 is an equidigital number, since it uses as much as digits as its factorization.

265881513011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120805.

The product of its (nonzero) digits is 57600, while the sum is 41.

The spelling of 265881513011 in words is "two hundred sixty-five billion, eight hundred eighty-one million, five hundred thirteen thousand, eleven".