505631655104123 has 2 divisors, whose sum is σ = 505631655104124. Its totient is φ = 505631655104122.

The previous prime is 505631655104087. The next prime is 505631655104141. The reversal of 505631655104123 is 321401556136505.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 505631655104123 - 2¹⁸ = 505631654841979 is a prime.

It is a super-3 number, since 3×505631655104123³ (a number of 45 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (505631655104623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252815827552061 + 252815827552062.

It is an arithmetic number, because the mean of its divisors is an integer number (252815827552062).

Almost surely, 2^{505631655104123} is an apocalyptic number.

505631655104123 is a deficient number, since it is larger than the sum of its proper divisors (1).

505631655104123 is an equidigital number, since it uses as much as digits as its factorization.

505631655104123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620000, while the sum is 47.

The spelling of 505631655104123 in words is "five hundred five trillion, six hundred thirty-one billion, six hundred fifty-five million, one hundred four thousand, one hundred twenty-three".