64543023633 has 16 divisors (see below), whose sum is σ = 99403160256. Its totient is φ = 36815984640.

The previous prime is 64543023619. The next prime is 64543023661. The reversal of 64543023633 is 33632034546.

It is not a de Polignac number, because 64543023633 - 2¹² = 64543019537 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64543023591 and 64543023600.

It is not an unprimeable number, because it can be changed into a prime (64543023613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57524416 + ... + 57525537.

It is an arithmetic number, because the mean of its divisors is an integer number (6212697516).

Almost surely, 2^64543023633 is an apocalyptic number.

It is an amenable number.

64543023633 is a deficient number, since it is larger than the sum of its proper divisors (34860136623).

64543023633 is a wasteful number, since it uses less digits than its factorization.

64543023633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115049984.

The product of its (nonzero) digits is 466560, while the sum is 39.

The spelling of 64543023633 in words is "sixty-four billion, five hundred forty-three million, twenty-three thousand, six hundred thirty-three".