11309405256 has 48 divisors (see below), whose sum is σ = 31961367360. Its totient is φ = 3605896800.

The previous prime is 11309405249. The next prime is 11309405267. The reversal of 11309405256 is 65250490311.

11309405256 is a `hidden beast` number, since 11 + 30 + 94 + 0 + 525 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 11309405256.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3413020 + ... + 3416331.

It is an arithmetic number, because the mean of its divisors is an integer number (665861820).

Almost surely, 2^11309405256 is an apocalyptic number.

It is an amenable number.

11309405256 is an abundant number, since it is smaller than the sum of its proper divisors (20651962104).

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

11309405256 is a wasteful number, since it uses less digits than its factorization.

11309405256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6829386 (or 6829379 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

Adding to 11309405256 its reverse (65250490311), we get a palindrome (76559895567).

The spelling of 11309405256 in words is "eleven billion, three hundred nine million, four hundred five thousand, two hundred fifty-six".