43648256653 has 4 divisors (see below), whose sum is σ = 46215801180. Its totient is φ = 41080712128.

The previous prime is 43648256633. The next prime is 43648256683. The reversal of 43648256653 is 35665284634.

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

It can be written as a sum of positive squares in 2 ways, for example, as 28858534884 + 14789721769 = 169878^2 + 121613^2 .

It is a cyclic number.

It is not a de Polignac number, because 43648256653 - 2²⁹ = 43111385741 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 43648256653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43648256633) 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, 1283772238 + ... + 1283772271.

It is an arithmetic number, because the mean of its divisors is an integer number (11553950295).

Almost surely, 2^43648256653 is an apocalyptic number.

It is an amenable number.

43648256653 is a deficient number, since it is larger than the sum of its proper divisors (2567544527).

43648256653 is a wasteful number, since it uses less digits than its factorization.

43648256653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2567544526.

The product of its digits is 12441600, while the sum is 52.

The spelling of 43648256653 in words is "forty-three billion, six hundred forty-eight million, two hundred fifty-six thousand, six hundred fifty-three".