30668990644 has 24 divisors (see below), whose sum is σ = 53840584448. Its totient is φ = 15286004640.

The previous prime is 30668990633. The next prime is 30668990647. The reversal of 30668990644 is 44609986603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30668990647) 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, 6252697 + ... + 6257599.

Almost surely, 2^30668990644 is an apocalyptic number.

It is an amenable number.

30668990644 is a deficient number, since it is larger than the sum of its proper divisors (23171593804).

30668990644 is a wasteful number, since it uses less digits than its factorization.

30668990644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9535 (or 9533 counting only the distinct ones).

The product of its (nonzero) digits is 6718464, while the sum is 55.

The spelling of 30668990644 in words is "thirty billion, six hundred sixty-eight million, nine hundred ninety thousand, six hundred forty-four".