33943640644 has 9 divisors (see below), whose sum is σ = 59402015967. Its totient is φ = 16971636084.

The previous prime is 33943640617. The next prime is 33943640651. The reversal of 33943640644 is 44604634933.

The square root of 33943640644 is 184238.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 33943640594 and 33943640603.

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 2 ways as a sum of consecutive naturals, for example, 322417 + ... + 414535.

Almost surely, 2^33943640644 is an apocalyptic number.

33943640644 is the 184238-th square number.

It is an amenable number.

33943640644 is a deficient number, since it is larger than the sum of its proper divisors (25458375323).

33943640644 is an frugal number, since it uses more digits than its factorization.

33943640644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184242 (or 92121 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 46.

The spelling of 33943640644 in words is "thirty-three billion, nine hundred forty-three million, six hundred forty thousand, six hundred forty-four".