43132123656 has 96 divisors (see below), whose sum is σ = 120050232120. Its totient is φ = 13981593600.

The previous prime is 43132123633. The next prime is 43132123669. The reversal of 43132123656 is 65632123134.

43132123656 is a `hidden beast` number, since 431 + 3 + 212 + 3 + 6 + 5 + 6 = 666.

43132123656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 27005663556 + 16126460100 = 164334^2 + 126990^2 .

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 43132123656.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 900636 + ... + 947316.

Almost surely, 2^43132123656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43132123656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60025116060).

43132123656 is an abundant number, since it is smaller than the sum of its proper divisors (76918108464).

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

43132123656 is a wasteful number, since it uses less digits than its factorization.

43132123656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47047 (or 47040 counting only the distinct ones).

The product of its digits is 77760, while the sum is 36.

The spelling of 43132123656 in words is "forty-three billion, one hundred thirty-two million, one hundred twenty-three thousand, six hundred fifty-six".