66434586241 has 4 divisors (see below), whose sum is σ = 66545496000. Its totient is φ = 66323676484.

The previous prime is 66434586221. The next prime is 66434586259. The reversal of 66434586241 is 14268543466.

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, and also an emirpimes, since its reverse is a distinct semiprime: 14268543466 = 2 ⋅7134271733.

It is a cyclic number.

It is not a de Polignac number, because 66434586241 - 2⁹ = 66434585729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66434586221) 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, 55453981 + ... + 55455178.

It is an arithmetic number, because the mean of its divisors is an integer number (16636374000).

Almost surely, 2^66434586241 is an apocalyptic number.

It is an amenable number.

66434586241 is a deficient number, since it is larger than the sum of its proper divisors (110909759).

66434586241 is a wasteful number, since it uses less digits than its factorization.

66434586241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110909758.

The product of its digits is 3317760, while the sum is 49.

The spelling of 66434586241 in words is "sixty-six billion, four hundred thirty-four million, five hundred eighty-six thousand, two hundred forty-one".