506434356561655 has 8 divisors (see below), whose sum is σ = 607826170272384. Its totient is φ = 405077523650400.

The previous prime is 506434356561607. The next prime is 506434356561667. The reversal of 506434356561655 is 556165653434605.

It is a happy number.

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

It is not a de Polignac number, because 506434356561655 - 2³¹ = 506432209078007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8745168016 + ... + 8745225925.

It is an arithmetic number, because the mean of its divisors is an integer number (75978271284048).

Almost surely, 2^{506434356561655} is an apocalyptic number.

506434356561655 is a deficient number, since it is larger than the sum of its proper divisors (101391813710729).

506434356561655 is a wasteful number, since it uses less digits than its factorization.

506434356561655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17490399737.

The product of its (nonzero) digits is 583200000, while the sum is 64.

The spelling of 506434356561655 in words is "five hundred six trillion, four hundred thirty-four billion, three hundred fifty-six million, five hundred sixty-one thousand, six hundred fifty-five".