30805738668 has 36 divisors (see below), whose sum is σ = 79871459080. Its totient is φ = 10267971552.

The previous prime is 30805738657. The next prime is 30805738699. The reversal of 30805738668 is 86683750803.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

30805738668 is a `hidden beast` number, since 3 + 0 + 8 + 0 + 573 + 8 + 6 + 68 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×30805738668² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 1815568 + ... + 1832456.

Almost surely, 2^30805738668 is an apocalyptic number.

It is an amenable number.

30805738668 is an abundant number, since it is smaller than the sum of its proper divisors (49065720412).

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

30805738668 is an frugal number, since it uses more digits than its factorization.

30805738668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33791 (or 16894 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 54.

The spelling of 30805738668 in words is "thirty billion, eight hundred five million, seven hundred thirty-eight thousand, six hundred sixty-eight".