30206763688 has 16 divisors (see below), whose sum is σ = 56639613780. Its totient is φ = 15102866688.

The previous prime is 30206763683. The next prime is 30206763737. The reversal of 30206763688 is 88636760203.

It can be written as a sum of positive squares in 2 ways, for example, as 21070844964 + 9135918724 = 145158^2 + 95582^2 .

It is a super-2 number, since 2×30206763688² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30206763683) 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, 319270 + ... + 402922.

Almost surely, 2^30206763688 is an apocalyptic number.

It is an amenable number.

30206763688 is a deficient number, since it is larger than the sum of its proper divisors (26432850092).

30206763688 is a wasteful number, since it uses less digits than its factorization.

30206763688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128796 (or 128792 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 49.

The spelling of 30206763688 in words is "thirty billion, two hundred six million, seven hundred sixty-three thousand, six hundred eighty-eight".