43649052447 has 128 divisors (see below), whose sum is σ = 81888952320. Its totient is φ = 19934576640.

The previous prime is 43649052443. The next prime is 43649052479. The reversal of 43649052447 is 74425094634.

It is not a de Polignac number, because 43649052447 - 2² = 43649052443 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43649052396 and 43649052405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43649052443) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 17749504 + ... + 17751962.

It is an arithmetic number, because the mean of its divisors is an integer number (639757440).

Almost surely, 2^43649052447 is an apocalyptic number.

43649052447 is a deficient number, since it is larger than the sum of its proper divisors (38239899873).

43649052447 is a wasteful number, since it uses less digits than its factorization.

43649052447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2773.

The product of its (nonzero) digits is 2903040, while the sum is 48.

The spelling of 43649052447 in words is "forty-three billion, six hundred forty-nine million, fifty-two thousand, four hundred forty-seven".