20163636072 has 64 divisors (see below), whose sum is σ = 56209593600. Its totient is φ = 6697272960.

The previous prime is 20163636049. The next prime is 20163636109. The reversal of 20163636072 is 27063636102.

20163636072 is a `hidden beast` number, since 2 + 0 + 16 + 3 + 636 + 0 + 7 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 105408 + ... + 226799.

It is an arithmetic number, because the mean of its divisors is an integer number (878274900).

Almost surely, 2^20163636072 is an apocalyptic number.

It is an amenable number.

20163636072 is an abundant number, since it is smaller than the sum of its proper divisors (36045957528).

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

20163636072 is a wasteful number, since it uses less digits than its factorization.

20163636072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332503 (or 332493 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 36.

The spelling of 20163636072 in words is "twenty billion, one hundred sixty-three million, six hundred thirty-six thousand, seventy-two".