30061636668 has 36 divisors (see below), whose sum is σ = 86844728880. Its totient is φ = 8589038976.

The previous prime is 30061636651. The next prime is 30061636747. The reversal of 30061636668 is 86663616003.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59645853 + ... + 59646356.

It is an arithmetic number, because the mean of its divisors is an integer number (2412353580).

Almost surely, 2^30061636668 is an apocalyptic number.

It is an amenable number.

30061636668 is an abundant number, since it is smaller than the sum of its proper divisors (56783092212).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30061636668 is a wasteful number, since it uses less digits than its factorization.

30061636668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119292226 (or 119292221 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 45.

The spelling of 30061636668 in words is "thirty billion, sixty-one million, six hundred thirty-six thousand, six hundred sixty-eight".