43145436672 has 400 divisors, whose sum is σ = 140577877440. Its totient is φ = 13094535168.

The previous prime is 43145436601. The next prime is 43145436689. The reversal of 43145436672 is 27663454134.

43145436672 is a `hidden beast` number, since 4 + 3 + 145 + 436 + 6 + 72 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 42591238 + ... + 42592250.

Almost surely, 2^43145436672 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 43145436672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70288938720).

43145436672 is an abundant number, since it is smaller than the sum of its proper divisors (97432440768).

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

43145436672 is a wasteful number, since it uses less digits than its factorization.

43145436672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1135 (or 1110 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 45.

The spelling of 43145436672 in words is "forty-three billion, one hundred forty-five million, four hundred thirty-six thousand, six hundred seventy-two".