265243316221105 has 8 divisors (see below), whose sum is σ = 325064149241472. Its totient is φ = 207679873126128.

The previous prime is 265243316221057. The next prime is 265243316221109. The reversal of 265243316221105 is 501122613342562.

265243316221105 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 265243316221105 - 2²⁵ = 265243282666673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (265243316221109) 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, 564347481087 + ... + 564347481556.

It is an arithmetic number, because the mean of its divisors is an integer number (40633018655184).

Almost surely, 2^{265243316221105} is an apocalyptic number.

It is an amenable number.

265243316221105 is a deficient number, since it is larger than the sum of its proper divisors (59820833020367).

265243316221105 is a wasteful number, since it uses less digits than its factorization.

265243316221105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1128694962695.

The product of its (nonzero) digits is 518400, while the sum is 43.

Adding to 265243316221105 its reverse (501122613342562), we get a palindrome (766365929563667).

The spelling of 265243316221105 in words is "two hundred sixty-five trillion, two hundred forty-three billion, three hundred sixteen million, two hundred twenty-one thousand, one hundred five".