463265216657561 has 4 divisors (see below), whose sum is σ = 463282200415332. Its totient is φ = 463248232899792.

The previous prime is 463265216657549. The next prime is 463265216657591. The reversal of 463265216657561 is 165756612562364.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 253450571057161 + 209814645600400 = 15920131^2 + 14484980^2 .

It is a cyclic number.

It is not a de Polignac number, because 463265216657561 - 2¹⁸ = 463265216395417 is a prime.

It is a super-2 number, since 2×463265216657561² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (463265216657531) 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, 8491837970 + ... + 8491892523.

It is an arithmetic number, because the mean of its divisors is an integer number (115820550103833).

Almost surely, 2^{463265216657561} is an apocalyptic number.

It is an amenable number.

463265216657561 is a deficient number, since it is larger than the sum of its proper divisors (16983757771).

463265216657561 is a wasteful number, since it uses less digits than its factorization.

463265216657561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16983757770.

The product of its digits is 326592000, while the sum is 65.

The spelling of 463265216657561 in words is "four hundred sixty-three trillion, two hundred sixty-five billion, two hundred sixteen million, six hundred fifty-seven thousand, five hundred sixty-one".