66160641543 has 16 divisors (see below), whose sum is σ = 88494072576. Its totient is φ = 43967373120.

The previous prime is 66160641517. The next prime is 66160641577. The reversal of 66160641543 is 34514606166.

It is not a de Polignac number, because 66160641543 - 2⁵ = 66160641511 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66160641495 and 66160641504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66160649543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1200963 + ... + 1254843.

It is an arithmetic number, because the mean of its divisors is an integer number (5530879536).

Almost surely, 2^66160641543 is an apocalyptic number.

66160641543 is a deficient number, since it is larger than the sum of its proper divisors (22333431033).

66160641543 is a wasteful number, since it uses less digits than its factorization.

66160641543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55174.

The product of its (nonzero) digits is 311040, while the sum is 42.

The spelling of 66160641543 in words is "sixty-six billion, one hundred sixty million, six hundred forty-one thousand, five hundred forty-three".