30305500636 has 18 divisors (see below), whose sum is σ = 56337822968. Its totient is φ = 14261411520.

The previous prime is 30305500633. The next prime is 30305500637. The reversal of 30305500636 is 63600550303.

It is a junction number, because it is equal to n+sod(n) for n = 30305500598 and 30305500607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30305500633) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13106760 + ... + 13109071.

Almost surely, 2^30305500636 is an apocalyptic number.

It is an amenable number.

30305500636 is a deficient number, since it is larger than the sum of its proper divisors (26032322332).

30305500636 is a wasteful number, since it uses less digits than its factorization.

30305500636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26215869 (or 26215850 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 31.

The spelling of 30305500636 in words is "thirty billion, three hundred five million, five hundred thousand, six hundred thirty-six".