506234500435661 has 4 divisors (see below), whose sum is σ = 506919526824000. Its totient is φ = 505549474047324.

The previous prime is 506234500435637. The next prime is 506234500435673. The reversal of 506234500435661 is 166534005432605.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-506234500435661 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 (506234500431661) 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, 342513193061 + ... + 342513194538.

It is an arithmetic number, because the mean of its divisors is an integer number (126729881706000).

Almost surely, 2^{506234500435661} is an apocalyptic number.

It is an amenable number.

506234500435661 is a deficient number, since it is larger than the sum of its proper divisors (685026388339).

506234500435661 is an equidigital number, since it uses as much as digits as its factorization.

506234500435661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685026388338.

The product of its (nonzero) digits is 7776000, while the sum is 50.

The spelling of 506234500435661 in words is "five hundred six trillion, two hundred thirty-four billion, five hundred million, four hundred thirty-five thousand, six hundred sixty-one".