53683468561 has 4 divisors (see below), whose sum is σ = 54439573824. Its totient is φ = 52927363300.

The previous prime is 53683468543. The next prime is 53683468571. The reversal of 53683468561 is 16586438635.

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 a de Polignac number, because none of the positive numbers 2^k-53683468561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53683468511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 378052525 + ... + 378052666.

It is an arithmetic number, because the mean of its divisors is an integer number (13609893456).

Almost surely, 2^53683468561 is an apocalyptic number.

It is an amenable number.

53683468561 is a deficient number, since it is larger than the sum of its proper divisors (756105263).

53683468561 is an equidigital number, since it uses as much as digits as its factorization.

53683468561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756105262.

The product of its digits is 12441600, while the sum is 55.

The spelling of 53683468561 in words is "fifty-three billion, six hundred eighty-three million, four hundred sixty-eight thousand, five hundred sixty-one".