20013603356 has 48 divisors (see below), whose sum is σ = 36131536896. Its totient is φ = 9694992384.

The previous prime is 20013603343. The next prime is 20013603361. The reversal of 20013603356 is 65330631002.

It is a happy number.

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, 17357276 + ... + 17358428.

It is an arithmetic number, because the mean of its divisors is an integer number (752740352).

Almost surely, 2^20013603356 is an apocalyptic number.

It is an amenable number.

20013603356 is a deficient number, since it is larger than the sum of its proper divisors (16117933540).

20013603356 is a wasteful number, since it uses less digits than its factorization.

20013603356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2058 (or 2056 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 29.

The spelling of 20013603356 in words is "twenty billion, thirteen million, six hundred three thousand, three hundred fifty-six".