20488125663 has 10 divisors (see below), whose sum is σ = 30605718704. Its totient is φ = 13658750388.

The previous prime is 20488125661. The next prime is 20488125683. The reversal of 20488125663 is 36652188402.

20488125663 is a `hidden beast` number, since 2 + 0 + 4 + 8 + 81 + 2 + 566 + 3 = 666.

It is not a de Polignac number, because 20488125663 - 2¹ = 20488125661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20488125661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 126469831 + ... + 126469992.

Almost surely, 2^20488125663 is an apocalyptic number.

20488125663 is a deficient number, since it is larger than the sum of its proper divisors (10117593041).

20488125663 is an equidigital number, since it uses as much as digits as its factorization.

20488125663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252939835 (or 252939826 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The spelling of 20488125663 in words is "twenty billion, four hundred eighty-eight million, one hundred twenty-five thousand, six hundred sixty-three".