11956559936480 has 48 divisors (see below), whose sum is σ = 28247671532304. Its totient is φ = 4782573404160.

The previous prime is 11956559936473. The next prime is 11956559936491. The reversal of 11956559936480 is 8463995565911.

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, 17234720 + ... + 17915040.

It is an arithmetic number, because the mean of its divisors is an integer number (588493156923).

Almost surely, 2^{11956559936480} is an apocalyptic number.

11956559936480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11956559936480 is an abundant number, since it is smaller than the sum of its proper divisors (16291111595824).

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

11956559936480 is a wasteful number, since it uses less digits than its factorization.

11956559936480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790179 (or 790171 counting only the distinct ones).

The product of its (nonzero) digits is 314928000, while the sum is 71.

The spelling of 11956559936480 in words is "eleven trillion, nine hundred fifty-six billion, five hundred fifty-nine million, nine hundred thirty-six thousand, four hundred eighty".