20532364646 has 16 divisors (see below), whose sum is σ = 32142528000. Its totient is φ = 9824454528.

The previous prime is 20532364627. The next prime is 20532364651. The reversal of 20532364646 is 64646323502.

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, 1559846 + ... + 1572953.

It is an arithmetic number, because the mean of its divisors is an integer number (2008908000).

Almost surely, 2^20532364646 is an apocalyptic number.

20532364646 is a deficient number, since it is larger than the sum of its proper divisors (11610163354).

20532364646 is a wasteful number, since it uses less digits than its factorization.

20532364646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3132943.

The product of its (nonzero) digits is 622080, while the sum is 41.

The spelling of 20532364646 in words is "twenty billion, five hundred thirty-two million, three hundred sixty-four thousand, six hundred forty-six".