505539171628 has 12 divisors (see below), whose sum is σ = 885608441872. Its totient is φ = 252508188240.

The previous prime is 505539171617. The next prime is 505539171629. The reversal of 505539171628 is 826171935505.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (505539171629) 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, 65345043 + ... + 65352778.

Almost surely, 2^505539171628 is an apocalyptic number.

It is an amenable number.

505539171628 is a deficient number, since it is larger than the sum of its proper divisors (380069270244).

505539171628 is a wasteful number, since it uses less digits than its factorization.

505539171628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130698792 (or 130698790 counting only the distinct ones).

The product of its (nonzero) digits is 2268000, while the sum is 52.

The spelling of 505539171628 in words is "five hundred five billion, five hundred thirty-nine million, one hundred seventy-one thousand, six hundred twenty-eight".