657200000043 has 12 divisors (see below), whose sum is σ = 982022988960. Its totient is φ = 423025287216.

The previous prime is 657199999999. The next prime is 657200000123. The reversal of 657200000043 is 340000002756.

It is a happy number.

657200000043 is a `hidden beast` number, since 657 + 2 + 0 + 0 + 0 + 0 + 0 + 0 + 4 + 3 = 666.

It is not a de Polignac number, because 657200000043 - 2²¹ = 657197902891 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 657199999962 and 657200000016.

It is not an unprimeable number, because it can be changed into a prime (657200000543) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1259003571 + ... + 1259004092.

It is an arithmetic number, because the mean of its divisors is an integer number (81835249080).

Almost surely, 2^657200000043 is an apocalyptic number.

657200000043 is a deficient number, since it is larger than the sum of its proper divisors (324822988917).

657200000043 is a wasteful number, since it uses less digits than its factorization.

657200000043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2518007698 (or 2518007695 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

Adding to 657200000043 its reverse (340000002756), we get a palindrome (997200002799).

The spelling of 657200000043 in words is "six hundred fifty-seven billion, two hundred million, forty-three", and thus it is an aban number.