261110542235 has 8 divisors (see below), whose sum is σ = 313347436416. Its totient is φ = 208878576640.

The previous prime is 261110542183. The next prime is 261110542243. The reversal of 261110542235 is 532245011162.

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

It is not a de Polignac number, because 261110542235 - 2²⁴ = 261093765019 is a prime.

It is a Duffinian number.

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, 1114571 + ... + 1328340.

It is an arithmetic number, because the mean of its divisors is an integer number (39168429552).

Almost surely, 2^261110542235 is an apocalyptic number.

261110542235 is a deficient number, since it is larger than the sum of its proper divisors (52236894181).

261110542235 is a wasteful number, since it uses less digits than its factorization.

261110542235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2464293.

The product of its (nonzero) digits is 14400, while the sum is 32.

Adding to 261110542235 its reverse (532245011162), we get a palindrome (793355553397).

The spelling of 261110542235 in words is "two hundred sixty-one billion, one hundred ten million, five hundred forty-two thousand, two hundred thirty-five".