20648322747 has 12 divisors (see below), whose sum is σ = 32119613344. Its totient is φ = 12706660080.

The previous prime is 20648322743. The next prime is 20648322767. The reversal of 20648322747 is 74722384602.

It is not a de Polignac number, because 20648322747 - 2² = 20648322743 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20648322743) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88240579 + ... + 88240812.

Almost surely, 2^20648322747 is an apocalyptic number.

20648322747 is a deficient number, since it is larger than the sum of its proper divisors (11471290597).

20648322747 is a wasteful number, since it uses less digits than its factorization.

20648322747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176481410 (or 176481407 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 45.

The spelling of 20648322747 in words is "twenty billion, six hundred forty-eight million, three hundred twenty-two thousand, seven hundred forty-seven".