64133733772 has 24 divisors (see below), whose sum is σ = 115281442080. Its totient is φ = 31196390400.

The previous prime is 64133733743. The next prime is 64133733779. The reversal of 64133733772 is 27733733146.

It is a super-2 number, since 2×64133733772² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64133733779) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1481004 + ... + 1523692.

It is an arithmetic number, because the mean of its divisors is an integer number (4803393420).

Almost surely, 2^64133733772 is an apocalyptic number.

It is an amenable number.

64133733772 is a deficient number, since it is larger than the sum of its proper divisors (51147708308).

64133733772 is a wasteful number, since it uses less digits than its factorization.

64133733772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52881 (or 52879 counting only the distinct ones).

The product of its digits is 1333584, while the sum is 46.

The spelling of 64133733772 in words is "sixty-four billion, one hundred thirty-three million, seven hundred thirty-three thousand, seven hundred seventy-two".