66645260570441 has 8 divisors (see below), whose sum is σ = 76266098830464. Its totient is φ = 57049443997920.

The previous prime is 66645260570437. The next prime is 66645260570461. The reversal of 66645260570441 is 14407506254666.

66645260570441 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 66645260570441 - 2² = 66645260570437 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66645260570461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6255416165 + ... + 6255426818.

It is an arithmetic number, because the mean of its divisors is an integer number (9533262353808).

Almost surely, 2^{66645260570441} is an apocalyptic number.

It is an amenable number.

66645260570441 is a deficient number, since it is larger than the sum of its proper divisors (9620838260023).

66645260570441 is a wasteful number, since it uses less digits than its factorization.

66645260570441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12510843751.

The product of its (nonzero) digits is 29030400, while the sum is 56.

The spelling of 66645260570441 in words is "sixty-six trillion, six hundred forty-five billion, two hundred sixty million, five hundred seventy thousand, four hundred forty-one".