20648330161605 has 96 divisors (see below), whose sum is σ = 38168570539008. Its totient is φ = 10290115584000.

The previous prime is 20648330161577. The next prime is 20648330161649. The reversal of 20648330161605 is 50616103384602.

20648330161605 is a `hidden beast` number, since 2 + 0 + 6 + 4 + 8 + 3 + 30 + 1 + 6 + 1 + 605 = 666.

It is not a de Polignac number, because 20648330161605 - 2¹² = 20648330157509 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 205219860 + ... + 205320450.

It is an arithmetic number, because the mean of its divisors is an integer number (397589276448).

Almost surely, 2^{20648330161605} is an apocalyptic number.

It is an amenable number.

20648330161605 is a deficient number, since it is larger than the sum of its proper divisors (17520240377403).

20648330161605 is a wasteful number, since it uses less digits than its factorization.

20648330161605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102547 (or 102544 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The spelling of 20648330161605 in words is "twenty trillion, six hundred forty-eight billion, three hundred thirty million, one hundred sixty-one thousand, six hundred five".