43405643457 has 48 divisors (see below), whose sum is σ = 70651316736. Its totient is φ = 25440480000.

The previous prime is 43405643453. The next prime is 43405643503. The reversal of 43405643457 is 75434650434.

43405643457 is a `hidden beast` number, since 4 + 3 + 4 + 0 + 564 + 34 + 57 = 666.

It is not a de Polignac number, because 43405643457 - 2² = 43405643453 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (43405643453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5523343 + ... + 5531195.

It is an arithmetic number, because the mean of its divisors is an integer number (1471902432).

Almost surely, 2^43405643457 is an apocalyptic number.

It is an amenable number.

43405643457 is a deficient number, since it is larger than the sum of its proper divisors (27245673279).

43405643457 is a wasteful number, since it uses less digits than its factorization.

43405643457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9702 (or 9699 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 45.

The spelling of 43405643457 in words is "forty-three billion, four hundred five million, six hundred forty-three thousand, four hundred fifty-seven".