2066351218441 has 16 divisors (see below), whose sum is σ = 2195626986000. Its totient is φ = 1937935433728.

The previous prime is 2066351218417. The next prime is 2066351218447. The reversal of 2066351218441 is 1448121536602.

It can be written as a sum of positive squares in 8 ways, for example, as 2468041 + 2066348750400 = 1571^2 + 1437480^2 .

It is not a de Polignac number, because 2066351218441 - 2¹⁹ = 2066350694153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2066351218447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54518025 + ... + 54555913.

It is an arithmetic number, because the mean of its divisors is an integer number (137226686625).

Almost surely, 2^{2066351218441} is an apocalyptic number.

It is an amenable number.

2066351218441 is a deficient number, since it is larger than the sum of its proper divisors (129275767559).

2066351218441 is a wasteful number, since it uses less digits than its factorization.

2066351218441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49148.

The product of its (nonzero) digits is 276480, while the sum is 43.

The spelling of 2066351218441 in words is "two trillion, sixty-six billion, three hundred fifty-one million, two hundred eighteen thousand, four hundred forty-one".