45105544561 has 16 divisors (see below), whose sum is σ = 57074826240. Its totient is φ = 34622588880.

The previous prime is 45105544541. The next prime is 45105544591. The reversal of 45105544561 is 16544550154.

It is not a de Polignac number, because 45105544561 - 2²⁹ = 44568673649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45105544501) 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, 4366381 + ... + 4376698.

It is an arithmetic number, because the mean of its divisors is an integer number (3567176640).

Almost surely, 2^45105544561 is an apocalyptic number.

It is an amenable number.

45105544561 is a deficient number, since it is larger than the sum of its proper divisors (11969281679).

45105544561 is a wasteful number, since it uses less digits than its factorization.

45105544561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8743164.

The product of its (nonzero) digits is 240000, while the sum is 40.

It can be divided in two parts, 451055 and 44561, that added together give a square (495616 = 704²).

The spelling of 45105544561 in words is "forty-five billion, one hundred five million, five hundred forty-four thousand, five hundred sixty-one".