20013062563556 has 12 divisors (see below), whose sum is σ = 35023361541168. Its totient is φ = 10006387837512.

The previous prime is 20013062563463. The next prime is 20013062563577. The reversal of 20013062563556 is 65536526031002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35546846 + ... + 36105461.

It is an arithmetic number, because the mean of its divisors is an integer number (2918613461764).

Almost surely, 2^{20013062563556} is an apocalyptic number.

It is an amenable number.

20013062563556 is a deficient number, since it is larger than the sum of its proper divisors (15010298977612).

20013062563556 is a wasteful number, since it uses less digits than its factorization.

20013062563556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71722138 (or 71722136 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 44.

Adding to 20013062563556 its reverse (65536526031002), we get a palindrome (85549588594558).

The spelling of 20013062563556 in words is "twenty trillion, thirteen billion, sixty-two million, five hundred sixty-three thousand, five hundred fifty-six".