43648405055 has 4 divisors (see below), whose sum is σ = 52378086072. Its totient is φ = 34918724040.

The previous prime is 43648405007. The next prime is 43648405057. The reversal of 43648405055 is 55050484634.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 43648405055 - 2²⁶ = 43581296191 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43648404997 and 43648405015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43648405057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4364840501 + ... + 4364840510.

It is an arithmetic number, because the mean of its divisors is an integer number (13094521518).

Almost surely, 2^43648405055 is an apocalyptic number.

43648405055 is a deficient number, since it is larger than the sum of its proper divisors (8729681017).

43648405055 is an equidigital number, since it uses as much as digits as its factorization.

43648405055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8729681016.

The product of its (nonzero) digits is 1152000, while the sum is 44.

Adding to 43648405055 its reverse (55050484634), we get a palindrome (98698889689).

The spelling of 43648405055 in words is "forty-three billion, six hundred forty-eight million, four hundred five thousand, fifty-five".