640000633353 has 32 divisors (see below), whose sum is σ = 898017269760. Its totient is φ = 404862722880.

The previous prime is 640000633333. The next prime is 640000633367. The reversal of 640000633353 is 353336000046.

It is not a de Polignac number, because 640000633353 - 2⁹ = 640000632841 is a prime.

It is a super-2 number, since 2×640000633353² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (640000633313) 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 31 ways as a sum of consecutive naturals, for example, 2384926 + ... + 2639672.

It is an arithmetic number, because the mean of its divisors is an integer number (28063039680).

Almost surely, 2^640000633353 is an apocalyptic number.

It is an amenable number.

640000633353 is a deficient number, since it is larger than the sum of its proper divisors (258016636407).

640000633353 is a wasteful number, since it uses less digits than its factorization.

640000633353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255277.

The product of its (nonzero) digits is 58320, while the sum is 33.

Adding to 640000633353 its reverse (353336000046), we get a palindrome (993336633399).

The spelling of 640000633353 in words is "six hundred forty billion, six hundred thirty-three thousand, three hundred fifty-three".