30672637642 has 24 divisors (see below), whose sum is σ = 46873099980. Its totient is φ = 15051674880.

The previous prime is 30672637601. The next prime is 30672637691. The reversal of 30672637642 is 24673627603.

It can be written as a sum of positive squares in 6 ways, for example, as 15219910161 + 15452727481 = 123369^2 + 124309^2 .

It is a junction number, because it is equal to n+sod(n) for n = 30672637592 and 30672637601.

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, 3336292 + ... + 3345472.

Almost surely, 2^30672637642 is an apocalyptic number.

30672637642 is a deficient number, since it is larger than the sum of its proper divisors (16200462338).

30672637642 is an equidigital number, since it uses as much as digits as its factorization.

30672637642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9546 (or 9409 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 46.

The spelling of 30672637642 in words is "thirty billion, six hundred seventy-two million, six hundred thirty-seven thousand, six hundred forty-two".