11801136261 has 8 divisors (see below), whose sum is σ = 15835070944. Its totient is φ = 7817312880.

The previous prime is 11801136253. The next prime is 11801136271. The reversal of 11801136261 is 16263110811.

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

It is not a de Polignac number, because 11801136261 - 2³ = 11801136253 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11801136271) 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, 12527275 + ... + 12528216.

It is an arithmetic number, because the mean of its divisors is an integer number (1979383868).

Almost surely, 2^11801136261 is an apocalyptic number.

It is an amenable number.

11801136261 is a deficient number, since it is larger than the sum of its proper divisors (4033934683).

11801136261 is a wasteful number, since it uses less digits than its factorization.

11801136261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25055651.

The product of its (nonzero) digits is 1728, while the sum is 30.

The spelling of 11801136261 in words is "eleven billion, eight hundred one million, one hundred thirty-six thousand, two hundred sixty-one".