505220361641 has 4 divisors (see below), whose sum is σ = 505264416384. Its totient is φ = 505176306900.

The previous prime is 505220361599. The next prime is 505220361683. The reversal of 505220361641 is 146163022505.

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 an interprime number because it is at equal distance from previous prime (505220361599) and next prime (505220361683).

It is a cyclic number.

It is not a de Polignac number, because 505220361641 - 2¹⁸ = 505220099497 is a prime.

It is a super-2 number, since 2×505220361641² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505220361241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22010165 + ... + 22033106.

It is an arithmetic number, because the mean of its divisors is an integer number (126316104096).

Almost surely, 2^505220361641 is an apocalyptic number.

It is an amenable number.

505220361641 is a deficient number, since it is larger than the sum of its proper divisors (44054743).

505220361641 is a wasteful number, since it uses less digits than its factorization.

505220361641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44054742.

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 505220361641 in words is "five hundred five billion, two hundred twenty million, three hundred sixty-one thousand, six hundred forty-one".