265143102403261 has 8 divisors (see below), whose sum is σ = 275085426046464. Its totient is φ = 255287611281360.

The previous prime is 265143102403247. The next prime is 265143102403297. The reversal of 265143102403261 is 162304201341562.

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 265143102403261 - 2⁷ = 265143102403133 is a prime.

It is a super-2 number, since 2×265143102403261² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265143102403241) 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, 21708124105 + ... + 21708136318.

It is an arithmetic number, because the mean of its divisors is an integer number (34385678255808).

Almost surely, 2^{265143102403261} is an apocalyptic number.

It is an amenable number.

265143102403261 is a deficient number, since it is larger than the sum of its proper divisors (9942323643203).

265143102403261 is a wasteful number, since it uses less digits than its factorization.

265143102403261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43416260651.

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 265143102403261 in words is "two hundred sixty-five trillion, one hundred forty-three billion, one hundred two million, four hundred three thousand, two hundred sixty-one".