43648745472 has 204 divisors, whose sum is σ = 129102837864. Its totient is φ = 14202961920.

The previous prime is 43648745453. The next prime is 43648745477. The reversal of 43648745472 is 27454784634.

43648745472 is a `hidden beast` number, since 43 + 6 + 4 + 87 + 454 + 72 = 666.

It is not an unprimeable number, because it can be changed into a prime (43648745477) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25361572 + ... + 25363292.

Almost surely, 2^43648745472 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 43648745472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64551418932).

43648745472 is an abundant number, since it is smaller than the sum of its proper divisors (85454092392).

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

43648745472 is an equidigital number, since it uses as much as digits as its factorization.

43648745472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1802 (or 1769 counting only the distinct ones).

The product of its digits is 18063360, while the sum is 54.

The spelling of 43648745472 in words is "forty-three billion, six hundred forty-eight million, seven hundred forty-five thousand, four hundred seventy-two".