30709509644 has 48 divisors (see below), whose sum is σ = 59056687872. Its totient is φ = 13857000000.

The previous prime is 30709509613. The next prime is 30709509647. The reversal of 30709509644 is 44690590703.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (30709509647) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 3430214 + ... + 3439154.

It is an arithmetic number, because the mean of its divisors is an integer number (1230347664).

Almost surely, 2^30709509644 is an apocalyptic number.

It is an amenable number.

30709509644 is a deficient number, since it is larger than the sum of its proper divisors (28347178228).

30709509644 is a wasteful number, since it uses less digits than its factorization.

30709509644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9518 (or 9516 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 47.

The spelling of 30709509644 in words is "thirty billion, seven hundred nine million, five hundred nine thousand, six hundred forty-four".