64333983020 has 24 divisors (see below), whose sum is σ = 138243258384. Its totient is φ = 25135137216.

The previous prime is 64333983019. The next prime is 64333983113. The reversal of 64333983020 is 2038933346.

It is a super-2 number, since 2×64333983020² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37402619 + ... + 37404338.

It is an arithmetic number, because the mean of its divisors is an integer number (5760135766).

Almost surely, 2^64333983020 is an apocalyptic number.

It is an amenable number.

64333983020 is an abundant number, since it is smaller than the sum of its proper divisors (73909275364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64333983020 is a wasteful number, since it uses less digits than its factorization.

64333983020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74807009 (or 74807007 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 41.

The spelling of 64333983020 in words is "sixty-four billion, three hundred thirty-three million, nine hundred eighty-three thousand, twenty".