20163117748 has 6 divisors (see below), whose sum is σ = 35285456066. Its totient is φ = 10081558872.

The previous prime is 20163117701. The next prime is 20163117757. The reversal of 20163117748 is 84771136102.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 14110588944 + 6052528804 = 118788^2 + 77798^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20163117748.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2520389715 + ... + 2520389722.

Almost surely, 2^20163117748 is an apocalyptic number.

It is an amenable number.

20163117748 is a deficient number, since it is larger than the sum of its proper divisors (15122338318).

20163117748 is a wasteful number, since it uses less digits than its factorization.

20163117748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5040779441 (or 5040779439 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 40.

The spelling of 20163117748 in words is "twenty billion, one hundred sixty-three million, one hundred seventeen thousand, seven hundred forty-eight".