545981189545 has 16 divisors (see below), whose sum is σ = 714811913280. Its totient is φ = 397036728000.

The previous prime is 545981189527. The next prime is 545981189557.

545981189545 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 545981189545 - 2¹³ = 545981181353 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43246 + ... + 1045864.

It is an arithmetic number, because the mean of its divisors is an integer number (44675744580).

Almost surely, 2^545981189545 is an apocalyptic number.

545981189545 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

545981189545 is a deficient number, since it is larger than the sum of its proper divisors (168830723735).

545981189545 is a wasteful number, since it uses less digits than its factorization.

545981189545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1012536.

The product of its digits is 51840000, while the sum is 64.

The spelling of 545981189545 in words is "five hundred forty-five billion, nine hundred eighty-one million, one hundred eighty-nine thousand, five hundred forty-five".