30646521506 has 8 divisors (see below), whose sum is σ = 46424928924. Its totient is φ = 15171545200.

The previous prime is 30646521497. The next prime is 30646521509. The reversal of 30646521506 is 60512564603.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 30157448281 + 489073225 = 173659^2 + 22115^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 30646521506.

It is not an unprimeable number, because it can be changed into a prime (30646521509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75857525 + ... + 75857928.

Almost surely, 2^30646521506 is an apocalyptic number.

30646521506 is a deficient number, since it is larger than the sum of its proper divisors (15778407418).

30646521506 is a wasteful number, since it uses less digits than its factorization.

30646521506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151715556.

The product of its (nonzero) digits is 129600, while the sum is 38.

The spelling of 30646521506 in words is "thirty billion, six hundred forty-six million, five hundred twenty-one thousand, five hundred six".