66141465543 has 12 divisors (see below), whose sum is σ = 99076105128. Its totient is φ = 44094310200.

The previous prime is 66141465521. The next prime is 66141465547. The reversal of 66141465543 is 34556414166.

66141465543 is a `hidden beast` number, since 6 + 6 + 1 + 41 + 4 + 65 + 543 = 666.

It is not a de Polignac number, because 66141465543 - 2¹⁶ = 66141400007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66141465547) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 136093308 + ... + 136093793.

It is an arithmetic number, because the mean of its divisors is an integer number (8256342094).

Almost surely, 2^66141465543 is an apocalyptic number.

66141465543 is a deficient number, since it is larger than the sum of its proper divisors (32934639585).

66141465543 is an equidigital number, since it uses as much as digits as its factorization.

66141465543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272187116 (or 272187104 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 45.

The spelling of 66141465543 in words is "sixty-six billion, one hundred forty-one million, four hundred sixty-five thousand, five hundred forty-three".