30989837568 has 36 divisors (see below), whose sum is σ = 82478163488. Its totient is φ = 10329945600.

The previous prime is 30989837561. The next prime is 30989837569. The reversal of 30989837568 is 86573898903.

It is a junction number, because it is equal to n+sod(n) for n = 30989837499 and 30989837508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30989837561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20174908 + ... + 20176443.

Almost surely, 2^30989837568 is an apocalyptic number.

It is an amenable number.

30989837568 is an abundant number, since it is smaller than the sum of its proper divisors (51488325920).

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

30989837568 is an equidigital number, since it uses as much as digits as its factorization.

30989837568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40351370 (or 40351356 counting only the distinct ones).

The product of its (nonzero) digits is 78382080, while the sum is 66.

The spelling of 30989837568 in words is "thirty billion, nine hundred eighty-nine million, eight hundred thirty-seven thousand, five hundred sixty-eight".