11809461659128 has 32 divisors (see below), whose sum is σ = 26178609592800. Its totient is φ = 4886673789312.

The previous prime is 11809461659111. The next prime is 11809461659153. The reversal of 11809461659128 is 82195616490811.

It is a congruent 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, 3635916375 + ... + 3635919622.

It is an arithmetic number, because the mean of its divisors is an integer number (818081549775).

Almost surely, 2^{11809461659128} is an apocalyptic number.

It is an amenable number.

11809461659128 is an abundant number, since it is smaller than the sum of its proper divisors (14369147933672).

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

11809461659128 is a wasteful number, since it uses less digits than its factorization.

11809461659128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7271836039 (or 7271836035 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 61.

The spelling of 11809461659128 in words is "eleven trillion, eight hundred nine billion, four hundred sixty-one million, six hundred fifty-nine thousand, one hundred twenty-eight".