265505512461 has 8 divisors (see below), whose sum is σ = 404579828544. Its totient is φ = 151717435680.

The previous prime is 265505512411. The next prime is 265505512483. The reversal of 265505512461 is 164215505562.

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

It is not a de Polignac number, because 265505512461 - 2⁶ = 265505512397 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265505512411) 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, 6321559800 + ... + 6321559841.

It is an arithmetic number, because the mean of its divisors is an integer number (50572478568).

Almost surely, 2^265505512461 is an apocalyptic number.

265505512461 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

265505512461 is a deficient number, since it is larger than the sum of its proper divisors (139074316083).

265505512461 is a wasteful number, since it uses less digits than its factorization.

265505512461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12643119651.

The product of its (nonzero) digits is 360000, while the sum is 42.

The spelling of 265505512461 in words is "two hundred sixty-five billion, five hundred five million, five hundred twelve thousand, four hundred sixty-one".