30890650068 has 18 divisors (see below), whose sum is σ = 78084698874. Its totient is φ = 10296883344.

The previous prime is 30890650057. The next prime is 30890650097. The reversal of 30890650068 is 86005609803.

30890650068 is a `hidden beast` number, since 3 + 0 + 89 + 0 + 6 + 500 + 68 = 666.

It can be written as a sum of positive squares in only one way, i.e., 30722377284 + 168272784 = 175278^2 + 12972^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 429036771 + ... + 429036842.

Almost surely, 2^30890650068 is an apocalyptic number.

It is an amenable number.

30890650068 is an abundant number, since it is smaller than the sum of its proper divisors (47194048806).

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

30890650068 is a wasteful number, since it uses less digits than its factorization.

30890650068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 858073623 (or 858073618 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The spelling of 30890650068 in words is "thirty billion, eight hundred ninety million, six hundred fifty thousand, sixty-eight".