20647364930 has 32 divisors (see below), whose sum is σ = 39401026560. Its totient is φ = 7776509760.

The previous prime is 20647364921. The next prime is 20647364953. The reversal of 20647364930 is 3946374602.

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 15 ways as a sum of consecutive naturals, for example, 888590 + ... + 911529.

It is an arithmetic number, because the mean of its divisors is an integer number (1231282080).

Almost surely, 2^20647364930 is an apocalyptic number.

20647364930 is a deficient number, since it is larger than the sum of its proper divisors (18753661630).

20647364930 is a wasteful number, since it uses less digits than its factorization.

20647364930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1800194.

The product of its (nonzero) digits is 653184, while the sum is 44.

The spelling of 20647364930 in words is "twenty billion, six hundred forty-seven million, three hundred sixty-four thousand, nine hundred thirty".