6441665623045 has 16 divisors (see below), whose sum is σ = 7746988135680. Its totient is φ = 5142007088064.

The previous prime is 6441665623033. The next prime is 6441665623073. The reversal of 6441665623045 is 5403265661446.

It is a cyclic number.

It is not a de Polignac number, because 6441665623045 - 2¹⁷ = 6441665491973 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6441665622983 and 6441665623001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117549142 + ... + 117603928.

It is an arithmetic number, because the mean of its divisors is an integer number (484186758480).

Almost surely, 2^{6441665623045} is an apocalyptic number.

It is an amenable number.

6441665623045 is a deficient number, since it is larger than the sum of its proper divisors (1305322512635).

6441665623045 is a wasteful number, since it uses less digits than its factorization.

6441665623045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106044.

The product of its (nonzero) digits is 12441600, while the sum is 52.

The spelling of 6441665623045 in words is "six trillion, four hundred forty-one billion, six hundred sixty-five million, six hundred twenty-three thousand, forty-five".