20711524550 has 48 divisors (see below), whose sum is σ = 38929941360. Its totient is φ = 8197378560.

The previous prime is 20711524549. The next prime is 20711524567. The reversal of 20711524550 is 5542511702.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5867186 + ... + 5870714.

It is an arithmetic number, because the mean of its divisors is an integer number (811040445).

Almost surely, 2^20711524550 is an apocalyptic number.

20711524550 is a deficient number, since it is larger than the sum of its proper divisors (18218416810).

20711524550 is a wasteful number, since it uses less digits than its factorization.

20711524550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4745 (or 4740 counting only the distinct ones).

The product of its (nonzero) digits is 14000, while the sum is 32.

It can be divided in two parts, 2071152 and 4550, that added together give a palindrome (2075702).

The spelling of 20711524550 in words is "twenty billion, seven hundred eleven million, five hundred twenty-four thousand, five hundred fifty".