66057006441 has 4 divisors (see below), whose sum is σ = 88076008592. Its totient is φ = 44038004292.

The previous prime is 66057006409. The next prime is 66057006451. The reversal of 66057006441 is 14460075066.

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.

It is not a de Polignac number, because 66057006441 - 2⁵ = 66057006409 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66057006441.

It is not an unprimeable number, because it can be changed into a prime (66057006451) 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, 11009501071 + ... + 11009501076.

It is an arithmetic number, because the mean of its divisors is an integer number (22019002148).

Almost surely, 2^66057006441 is an apocalyptic number.

It is an amenable number.

66057006441 is a deficient number, since it is larger than the sum of its proper divisors (22019002151).

66057006441 is a wasteful number, since it uses less digits than its factorization.

66057006441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22019002150.

The product of its (nonzero) digits is 120960, while the sum is 39.

The spelling of 66057006441 in words is "sixty-six billion, fifty-seven million, six thousand, four hundred forty-one".