66159141 has 16 divisors (see below), whose sum is σ = 90043968. Its totient is φ = 43200000.

The previous prime is 66159139. The next prime is 66159143. The reversal of 66159141 is 14195166.

It is an interprime number because it is at equal distance from previous prime (66159139) and next prime (66159143).

It is not a de Polignac number, because 66159141 - 2¹ = 66159139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66159143) 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, 28266 + ... + 30516.

It is an arithmetic number, because the mean of its divisors is an integer number (5627748).

Almost surely, 2^66159141 is an apocalyptic number.

It is an amenable number.

66159141 is a deficient number, since it is larger than the sum of its proper divisors (23884827).

66159141 is a wasteful number, since it uses less digits than its factorization.

66159141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2452.

The product of its digits is 6480, while the sum is 33.

The square root of 66159141 is about 8133.8269590642. The cubic root of 66159141 is about 404.4485529516.

The spelling of 66159141 in words is "sixty-six million, one hundred fifty-nine thousand, one hundred forty-one".