66531168053 has 4 divisors (see below), whose sum is σ = 76035620640. Its totient is φ = 57026715468.

The previous prime is 66531168047. The next prime is 66531168071. The reversal of 66531168053 is 35086113566.

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 66531168053 - 2¹² = 66531163957 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 66531167995 and 66531168013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66531168013) 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, 4752226283 + ... + 4752226296.

It is an arithmetic number, because the mean of its divisors is an integer number (19008905160).

Almost surely, 2^66531168053 is an apocalyptic number.

It is an amenable number.

66531168053 is a deficient number, since it is larger than the sum of its proper divisors (9504452587).

66531168053 is an equidigital number, since it uses as much as digits as its factorization.

66531168053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9504452586.

The product of its (nonzero) digits is 388800, while the sum is 44.

The spelling of 66531168053 in words is "sixty-six billion, five hundred thirty-one million, one hundred sixty-eight thousand, fifty-three".