50172020871 has 16 divisors (see below), whose sum is σ = 76469562624. Its totient is φ = 28663366464.

The previous prime is 50172020827. The next prime is 50172020881. The reversal of 50172020871 is 17802027105.

It is not a de Polignac number, because 50172020871 - 2¹⁰ = 50172019847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50172020881) 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 15 ways as a sum of consecutive naturals, for example, 167230 + ... + 358203.

It is an arithmetic number, because the mean of its divisors is an integer number (4779347664).

Almost surely, 2^50172020871 is an apocalyptic number.

50172020871 is a deficient number, since it is larger than the sum of its proper divisors (26297541753).

50172020871 is a wasteful number, since it uses less digits than its factorization.

50172020871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529990.

The product of its (nonzero) digits is 7840, while the sum is 33.

Adding to 50172020871 its reverse (17802027105), we get a palindrome (67974047976).

The spelling of 50172020871 in words is "fifty billion, one hundred seventy-two million, twenty thousand, eight hundred seventy-one".