30685112644 has 6 divisors (see below), whose sum is σ = 53698947134. Its totient is φ = 15342556320.

The previous prime is 30685112641. The next prime is 30685112701. The reversal of 30685112644 is 44621158603.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 24621375744 + 6063736900 = 156912^2 + 77870^2 .

It is a super-2 number, since 2×30685112644² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30685112597 and 30685112606.

It is not an unprimeable number, because it can be changed into a prime (30685112641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3835639077 + ... + 3835639084.

Almost surely, 2^30685112644 is an apocalyptic number.

It is an amenable number.

30685112644 is a deficient number, since it is larger than the sum of its proper divisors (23013834490).

30685112644 is a wasteful number, since it uses less digits than its factorization.

30685112644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7671278165 (or 7671278163 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 40.

The spelling of 30685112644 in words is "thirty billion, six hundred eighty-five million, one hundred twelve thousand, six hundred forty-four".