506550601111601 has 4 divisors (see below), whose sum is σ = 506550669081600. Its totient is φ = 506550533141604.

The previous prime is 506550601111531. The next prime is 506550601111699. The reversal of 506550601111601 is 106111106055605.

It is a happy number.

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 not a de Polignac number, because 506550601111601 - 2¹⁰ = 506550601110577 is a prime.

It is a super-2 number, since 2×506550601111601² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (506550601111001) 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, 21203921 + ... + 38245358.

It is an arithmetic number, because the mean of its divisors is an integer number (126637667270400).

Almost surely, 2^{506550601111601} is an apocalyptic number.

It is an amenable number.

506550601111601 is a deficient number, since it is larger than the sum of its proper divisors (67969999).

506550601111601 is an equidigital number, since it uses as much as digits as its factorization.

506550601111601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67969998.

The product of its (nonzero) digits is 27000, while the sum is 38.

The spelling of 506550601111601 in words is "five hundred six trillion, five hundred fifty billion, six hundred one million, one hundred eleven thousand, six hundred one".