20148885402648 has 64 divisors (see below), whose sum is σ = 51042774720000. Its totient is φ = 6626996767872.

The previous prime is 20148885402589. The next prime is 20148885402697. The reversal of 20148885402648 is 84620458884102.

It is a junction number, because it is equal to n+sod(n) for n = 20148885402591 and 20148885402600.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 493390 + ... + 6367197.

It is an arithmetic number, because the mean of its divisors is an integer number (797543355000).

Almost surely, 2^{20148885402648} is an apocalyptic number.

It is an amenable number.

20148885402648 is an abundant number, since it is smaller than the sum of its proper divisors (30893889317352).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20148885402648 is a wasteful number, since it uses less digits than its factorization.

20148885402648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6862224 (or 6862220 counting only the distinct ones).

The product of its (nonzero) digits is 31457280, while the sum is 60.

The spelling of 20148885402648 in words is "twenty trillion, one hundred forty-eight billion, eight hundred eighty-five million, four hundred two thousand, six hundred forty-eight".