11871650814544 has 20 divisors (see below), whose sum is σ = 23003608135540. Its totient is φ = 5935235811840.

The previous prime is 11871650814533. The next prime is 11871650814557. The reversal of 11871650814544 is 44541805617811.

It can be written as a sum of positive squares in 2 ways, for example, as 6601816360000 + 5269834454544 = 2569400^2 + 2295612^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36683577 + ... + 37005784.

It is an arithmetic number, because the mean of its divisors is an integer number (1150180406777).

Almost surely, 2^{11871650814544} is an apocalyptic number.

It is an amenable number.

11871650814544 is a deficient number, since it is larger than the sum of its proper divisors (11131957320996).

11871650814544 is a wasteful number, since it uses less digits than its factorization.

11871650814544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73699438 (or 73699432 counting only the distinct ones).

The product of its (nonzero) digits is 4300800, while the sum is 55.

The spelling of 11871650814544 in words is "eleven trillion, eight hundred seventy-one billion, six hundred fifty million, eight hundred fourteen thousand, five hundred forty-four".