261265495694298 has 16 divisors (see below), whose sum is σ = 522607195494720. Its totient is φ = 87075797880416.

The previous prime is 261265495694237. The next prime is 261265495694303. The reversal of 261265495694298 is 892496594562162.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3175126518 + ... + 3175208801.

It is an arithmetic number, because the mean of its divisors is an integer number (32662949718420).

Almost surely, 2^{261265495694298} is an apocalyptic number.

261265495694298 is an abundant number, since it is smaller than the sum of its proper divisors (261341699800422).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

261265495694298 is a wasteful number, since it uses less digits than its factorization.

261265495694298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6350342181.

The product of its digits is 4031078400, while the sum is 78.

The spelling of 261265495694298 in words is "two hundred sixty-one trillion, two hundred sixty-five billion, four hundred ninety-five million, six hundred ninety-four thousand, two hundred ninety-eight".