20488616488 has 16 divisors (see below), whose sum is σ = 38452108500. Its totient is φ = 10234720896.

The previous prime is 20488616443. The next prime is 20488616501. The reversal of 20488616488 is 88461688402.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20351304964 + 137311524 = 142658^2 + 11718^2 .

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 3 ways as a sum of consecutive naturals, for example, 1189333 + ... + 1206436.

Almost surely, 2^20488616488 is an apocalyptic number.

It is an amenable number.

20488616488 is a deficient number, since it is larger than the sum of its proper divisors (17963492012).

20488616488 is a wasteful number, since it uses less digits than its factorization.

20488616488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2396844 (or 2396840 counting only the distinct ones).

The product of its (nonzero) digits is 4718592, while the sum is 55.

The spelling of 20488616488 in words is "twenty billion, four hundred eighty-eight million, six hundred sixteen thousand, four hundred eighty-eight".