4645640043 has 24 divisors (see below), whose sum is σ = 7518257136. Its totient is φ = 2739441600.

The previous prime is 4645640039. The next prime is 4645640101. The reversal of 4645640043 is 3400465464.

4645640043 is a `hidden beast` number, since 4 + 6 + 4 + 5 + 640 + 0 + 4 + 3 = 666.

It is not a de Polignac number, because 4645640043 - 2² = 4645640039 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4645640033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 630468 + ... + 637793.

It is an arithmetic number, because the mean of its divisors is an integer number (313260714).

Almost surely, 2^4645640043 is an apocalyptic number.

4645640043 is a deficient number, since it is larger than the sum of its proper divisors (2872617093).

4645640043 is a wasteful number, since it uses less digits than its factorization.

4645640043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1268315 (or 1268312 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 36.

The square root of 4645640043 is about 68158.9322319533. The cubic root of 4645640043 is about 1668.5857057963.

The spelling of 4645640043 in words is "four billion, six hundred forty-five million, six hundred forty thousand, forty-three".