505601655443 has 2 divisors, whose sum is σ = 505601655444. Its totient is φ = 505601655442.

The previous prime is 505601655421. The next prime is 505601655487. The reversal of 505601655443 is 344556106505.

It is an a-pointer prime, because the next prime (505601655487) can be obtained adding 505601655443 to its sum of digits (44).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 505601655443 - 2¹⁰ = 505601654419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 505601655394 and 505601655403.

It is not a weakly prime, because it can be changed into another prime (505601655343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252800827721 + 252800827722.

It is an arithmetic number, because the mean of its divisors is an integer number (252800827722).

Almost surely, 2^505601655443 is an apocalyptic number.

505601655443 is a deficient number, since it is larger than the sum of its proper divisors (1).

505601655443 is an equidigital number, since it uses as much as digits as its factorization.

505601655443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080000, while the sum is 44.

The spelling of 505601655443 in words is "five hundred five billion, six hundred one million, six hundred fifty-five thousand, four hundred forty-three".