502172695989 has 6 divisors (see below), whose sum is σ = 725360560886. Its totient is φ = 334781797320.

The previous prime is 502172695963. The next prime is 502172696021. The reversal of 502172695989 is 989596271205.

502172695989 is a `hidden beast` number, since 5 + 0 + 2 + 17 + 26 + 9 + 598 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 473264195364 + 28908500625 = 687942^2 + 170025^2 .

It is not a de Polignac number, because 502172695989 - 2⁸ = 502172695733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (502172695939) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27898483102 + ... + 27898483119.

Almost surely, 2^502172695989 is an apocalyptic number.

It is an amenable number.

502172695989 is a deficient number, since it is larger than the sum of its proper divisors (223187864897).

502172695989 is a wasteful number, since it uses less digits than its factorization.

502172695989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55796966227 (or 55796966224 counting only the distinct ones).

The product of its (nonzero) digits is 24494400, while the sum is 63.

The spelling of 502172695989 in words is "five hundred two billion, one hundred seventy-two million, six hundred ninety-five thousand, nine hundred eighty-nine".