20480736736 has 12 divisors (see below), whose sum is σ = 40321450512. Its totient is φ = 10240368352.

The previous prime is 20480736721. The next prime is 20480736739. The reversal of 20480736736 is 63763708402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20480736739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320011480 + ... + 320011543.

It is an arithmetic number, because the mean of its divisors is an integer number (3360120876).

Almost surely, 2^20480736736 is an apocalyptic number.

It is an amenable number.

20480736736 is a deficient number, since it is larger than the sum of its proper divisors (19840713776).

20480736736 is an equidigital number, since it uses as much as digits as its factorization.

20480736736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640023033 (or 640023025 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 46.

The spelling of 20480736736 in words is "twenty billion, four hundred eighty million, seven hundred thirty-six thousand, seven hundred thirty-six".