20517071050 has 24 divisors (see below), whose sum is σ = 43613431776. Its totient is φ = 7034424240.

The previous prime is 20517071009. The next prime is 20517071063. The reversal of 20517071050 is 5017071502.

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 11 ways as a sum of consecutive naturals, for example, 29309752 + ... + 29310451.

It is an arithmetic number, because the mean of its divisors is an integer number (1817226324).

Almost surely, 2^20517071050 is an apocalyptic number.

20517071050 is an abundant number, since it is smaller than the sum of its proper divisors (23096360726).

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

20517071050 is a wasteful number, since it uses less digits than its factorization.

20517071050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58620222 (or 58620217 counting only the distinct ones).

The product of its (nonzero) digits is 2450, while the sum is 28.

The spelling of 20517071050 in words is "twenty billion, five hundred seventeen million, seventy-one thousand, fifty".