505364053361 has 4 divisors (see below), whose sum is σ = 517690005924. Its totient is φ = 493038100800.

The previous prime is 505364053357. The next prime is 505364053379. The reversal of 505364053361 is 163350463505.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 163350463505 = 5 ⋅32670092701.

It can be written as a sum of positive squares in 2 ways, for example, as 6363093361 + 499000960000 = 79769^2 + 706400^2 .

It is a cyclic number.

It is not a de Polignac number, because 505364053361 - 2² = 505364053357 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 12325952521 = 505364053361 / (5 + 0 + 5 + 3 + 6 + 4 + 0 + 5 + 3 + 3 + 6 + 1).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (505364053351) 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, 6162976220 + ... + 6162976301.

It is an arithmetic number, because the mean of its divisors is an integer number (129422501481).

Almost surely, 2^505364053361 is an apocalyptic number.

It is an amenable number.

505364053361 is a deficient number, since it is larger than the sum of its proper divisors (12325952563).

505364053361 is a wasteful number, since it uses less digits than its factorization.

505364053361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12325952562.

The product of its (nonzero) digits is 486000, while the sum is 41.

The spelling of 505364053361 in words is "five hundred five billion, three hundred sixty-four million, fifty-three thousand, three hundred sixty-one".