66125042441 has 8 divisors (see below), whose sum is σ = 66547207584. Its totient is φ = 65703078720.

The previous prime is 66125042413. The next prime is 66125042461. The reversal of 66125042441 is 14424052166.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66125042441 - 2¹⁸ = 66124780297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66125042411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 638225 + ... + 734561.

It is an arithmetic number, because the mean of its divisors is an integer number (8318400948).

Almost surely, 2^66125042441 is an apocalyptic number.

It is an amenable number.

66125042441 is a deficient number, since it is larger than the sum of its proper divisors (422165143).

66125042441 is a wasteful number, since it uses less digits than its factorization.

66125042441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100711.

The product of its (nonzero) digits is 46080, while the sum is 35.

The spelling of 66125042441 in words is "sixty-six billion, one hundred twenty-five million, forty-two thousand, four hundred forty-one".