505654172158231 has 8 divisors (see below), whose sum is σ = 517462398396944. Its totient is φ = 493848165323520.

The previous prime is 505654172158189. The next prime is 505654172158249. The reversal of 505654172158231 is 132851271456505.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 505654172158231 - 2¹¹ = 505654172156183 is a prime.

It is a super-2 number, since 2×505654172158231² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505654172159231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 554390010 + ... + 555301351.

It is an arithmetic number, because the mean of its divisors is an integer number (64682799799618).

Almost surely, 2^{505654172158231} is an apocalyptic number.

505654172158231 is a deficient number, since it is larger than the sum of its proper divisors (11808226238713).

505654172158231 is a wasteful number, since it uses less digits than its factorization.

505654172158231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1109702001.

The product of its (nonzero) digits is 10080000, while the sum is 55.

The spelling of 505654172158231 in words is "five hundred five trillion, six hundred fifty-four billion, one hundred seventy-two million, one hundred fifty-eight thousand, two hundred thirty-one".