1805553607145 has 16 divisors (see below), whose sum is σ = 2197513463040. Its totient is φ = 1423882958400.

The previous prime is 1805553607097. The next prime is 1805553607147. The reversal of 1805553607145 is 5417063555081.

It is not a de Polignac number, because 1805553607145 - 2¹⁴ = 1805553590761 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1805553607093 and 1805553607102.

It is not an unprimeable number, because it can be changed into a prime (1805553607147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1982876 + ... + 2746434.

It is an arithmetic number, because the mean of its divisors is an integer number (137344591440).

Almost surely, 2^{1805553607145} is an apocalyptic number.

It is an amenable number.

1805553607145 is a deficient number, since it is larger than the sum of its proper divisors (391959855895).

1805553607145 is an equidigital number, since it uses as much as digits as its factorization.

1805553607145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770296.

The product of its (nonzero) digits is 2520000, while the sum is 50.

The spelling of 1805553607145 in words is "one trillion, eight hundred five billion, five hundred fifty-three million, six hundred seven thousand, one hundred forty-five".