30733721644 has 12 divisors (see below), whose sum is σ = 53791670800. Its totient is φ = 15364672848.

The previous prime is 30733721639. The next prime is 30733721663. The reversal of 30733721644 is 44612733703.

It is a junction number, because it is equal to n+sod(n) for n = 30733721597 and 30733721606.

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, 515184 + ... + 571735.

Almost surely, 2^30733721644 is an apocalyptic number.

It is an amenable number.

30733721644 is a deficient number, since it is larger than the sum of its proper divisors (23057949156).

30733721644 is a wasteful number, since it uses less digits than its factorization.

30733721644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1093992 (or 1093990 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 40.

The spelling of 30733721644 in words is "thirty billion, seven hundred thirty-three million, seven hundred twenty-one thousand, six hundred forty-four".