30640465646 has 16 divisors (see below), whose sum is σ = 52591459680. Its totient is φ = 13115391360.

The previous prime is 30640465613. The next prime is 30640465651. The reversal of 30640465646 is 64656404603.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 30640465597 and 30640465606.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1341335 + ... + 1363986.

It is an arithmetic number, because the mean of its divisors is an integer number (3286966230).

Almost surely, 2^30640465646 is an apocalyptic number.

30640465646 is a deficient number, since it is larger than the sum of its proper divisors (21950994034).

30640465646 is a wasteful number, since it uses less digits than its factorization.

30640465646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2706139.

The product of its (nonzero) digits is 1244160, while the sum is 44.

The spelling of 30640465646 in words is "thirty billion, six hundred forty million, four hundred sixty-five thousand, six hundred forty-six".