500420125571 has 4 divisors (see below), whose sum is σ = 517675992000. Its totient is φ = 483164259144.

The previous prime is 500420125553. The next prime is 500420125573. The reversal of 500420125571 is 175521024005.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-500420125571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (500420125573) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8627933171 + ... + 8627933228.

It is an arithmetic number, because the mean of its divisors is an integer number (129418998000).

Almost surely, 2^500420125571 is an apocalyptic number.

500420125571 is a deficient number, since it is larger than the sum of its proper divisors (17255866429).

500420125571 is a wasteful number, since it uses less digits than its factorization.

500420125571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17255866428.

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

Adding to 500420125571 its reverse (175521024005), we get a palindrome (675941149576).

The spelling of 500420125571 in words is "five hundred billion, four hundred twenty million, one hundred twenty-five thousand, five hundred seventy-one".