645883383032 has 16 divisors (see below), whose sum is σ = 1211373592200. Its totient is φ = 322850425120.

The previous prime is 645883383029. The next prime is 645883383091. The reversal of 645883383032 is 230383388546.

It is a super-2 number, since 2×645883383032² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 11378219 + ... + 11434842.

Almost surely, 2^645883383032 is an apocalyptic number.

It is an amenable number.

645883383032 is a deficient number, since it is larger than the sum of its proper divisors (565490209168).

645883383032 is a wasteful number, since it uses less digits than its factorization.

645883383032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22816606 (or 22816602 counting only the distinct ones).

The product of its (nonzero) digits is 9953280, while the sum is 53.

The spelling of 645883383032 in words is "six hundred forty-five billion, eight hundred eighty-three million, three hundred eighty-three thousand, thirty-two".