50642556571 has 4 divisors (see below), whose sum is σ = 50643158544. Its totient is φ = 50641954600.

The previous prime is 50642556557. The next prime is 50642556607. The reversal of 50642556571 is 17565524605.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 50642556571 - 2²³ = 50634167963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50642556271) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 149320 + ... + 351541.

It is an arithmetic number, because the mean of its divisors is an integer number (12660789636).

Almost surely, 2^50642556571 is an apocalyptic number.

50642556571 is a deficient number, since it is larger than the sum of its proper divisors (601973).

50642556571 is a wasteful number, since it uses less digits than its factorization.

50642556571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601972.

The product of its (nonzero) digits is 1260000, while the sum is 46.

The spelling of 50642556571 in words is "fifty billion, six hundred forty-two million, five hundred fifty-six thousand, five hundred seventy-one".