261153011133 has 24 divisors (see below), whose sum is σ = 432265561728. Its totient is φ = 148830197472.

The previous prime is 261153011113. The next prime is 261153011239. The reversal of 261153011133 is 331110351162.

It is a happy number.

261153011133 is a `hidden beast` number, since 2 + 6 + 11 + 530 + 1 + 113 + 3 = 666.

It is not a de Polignac number, because 261153011133 - 2⁵ = 261153011101 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 261153011097 and 261153011106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261153011113) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5533185 + ... + 5580182.

It is an arithmetic number, because the mean of its divisors is an integer number (18011065072).

Almost surely, 2^261153011133 is an apocalyptic number.

It is an amenable number.

261153011133 is a deficient number, since it is larger than the sum of its proper divisors (171112550595).

261153011133 is a wasteful number, since it uses less digits than its factorization.

261153011133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11113753 (or 11113750 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

Adding to 261153011133 its reverse (331110351162), we get a palindrome (592263362295).

The spelling of 261153011133 in words is "two hundred sixty-one billion, one hundred fifty-three million, eleven thousand, one hundred thirty-three".