20051603356 has 24 divisors (see below), whose sum is σ = 36136800000. Its totient is φ = 9731105904.

The previous prime is 20051603353. The next prime is 20051603381. The reversal of 20051603356 is 65330615002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20051603353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 519106 + ... + 556393.

It is an arithmetic number, because the mean of its divisors is an integer number (1505700000).

Almost surely, 2^20051603356 is an apocalyptic number.

It is an amenable number.

20051603356 is a deficient number, since it is larger than the sum of its proper divisors (16085196644).

20051603356 is a wasteful number, since it uses less digits than its factorization.

20051603356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1075641 (or 1075639 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 31.

The spelling of 20051603356 in words is "twenty billion, fifty-one million, six hundred three thousand, three hundred fifty-six".