66126043241 has 4 divisors (see below), whose sum is σ = 66267641232. Its totient is φ = 65984445252.

The previous prime is 66126043231. The next prime is 66126043259. The reversal of 66126043241 is 14234062166.

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: 14234062166 = 2 ⋅7117031083.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66126043241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66126043201) 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, 70798295 + ... + 70799228.

It is an arithmetic number, because the mean of its divisors is an integer number (16566910308).

Almost surely, 2^66126043241 is an apocalyptic number.

It is an amenable number.

66126043241 is a deficient number, since it is larger than the sum of its proper divisors (141597991).

66126043241 is a wasteful number, since it uses less digits than its factorization.

66126043241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141597990.

The product of its (nonzero) digits is 41472, while the sum is 35.

The spelling of 66126043241 in words is "sixty-six billion, one hundred twenty-six million, forty-three thousand, two hundred forty-one".