11947995132 has 12 divisors (see below), whose sum is σ = 27878655336. Its totient is φ = 3982665040.

The previous prime is 11947995121. The next prime is 11947995181. The reversal of 11947995132 is 23159974911.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 497833119 + ... + 497833142.

It is an arithmetic number, because the mean of its divisors is an integer number (2323221278).

Almost surely, 2^11947995132 is an apocalyptic number.

11947995132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11947995132 is an abundant number, since it is smaller than the sum of its proper divisors (15930660204).

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

11947995132 is a wasteful number, since it uses less digits than its factorization.

11947995132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 995666268 (or 995666266 counting only the distinct ones).

The product of its digits is 612360, while the sum is 51.

The spelling of 11947995132 in words is "eleven billion, nine hundred forty-seven million, nine hundred ninety-five thousand, one hundred thirty-two".