4404455661145 has 4 divisors (see below), whose sum is σ = 5285346793380. Its totient is φ = 3523564528912.

The previous prime is 4404455661139. The next prime is 4404455661157. The reversal of 4404455661145 is 5411665544044.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3300518793289 + 1103936867856 = 1816733^2 + 1050684^2 .

It is a cyclic number.

It is not a de Polignac number, because 4404455661145 - 2³¹ = 4402308177497 is a prime.

It is a super-2 number, since 2×4404455661145² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 440445566110 + ... + 440445566119.

It is an arithmetic number, because the mean of its divisors is an integer number (1321336698345).

Almost surely, 2^{4404455661145} is an apocalyptic number.

It is an amenable number.

4404455661145 is a deficient number, since it is larger than the sum of its proper divisors (880891132235).

4404455661145 is an equidigital number, since it uses as much as digits as its factorization.

4404455661145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880891132234.

The product of its (nonzero) digits is 4608000, while the sum is 49.

The spelling of 4404455661145 in words is "four trillion, four hundred four billion, four hundred fifty-five million, six hundred sixty-one thousand, one hundred forty-five".