11305135261 has 8 divisors (see below), whose sum is σ = 13600162880. Its totient is φ = 9180109728.

The previous prime is 11305135253. The next prime is 11305135277. The reversal of 11305135261 is 16253150311.

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 11305135261 - 2³ = 11305135253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11305135241) 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, 42500376 + ... + 42500641.

It is an arithmetic number, because the mean of its divisors is an integer number (1700020360).

Almost surely, 2^11305135261 is an apocalyptic number.

It is an amenable number.

11305135261 is a deficient number, since it is larger than the sum of its proper divisors (2295027619).

11305135261 is an equidigital number, since it uses as much as digits as its factorization.

11305135261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85001043.

The product of its (nonzero) digits is 2700, while the sum is 28.

Adding to 11305135261 its reverse (16253150311), we get a palindrome (27558285572).

The spelling of 11305135261 in words is "eleven billion, three hundred five million, one hundred thirty-five thousand, two hundred sixty-one".