541131542605 has 4 divisors (see below), whose sum is σ = 649357851132. Its totient is φ = 432905234080.

The previous prime is 541131542509. The next prime is 541131542639. The reversal of 541131542605 is 506245131145.

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 151802965161 + 389328577444 = 389619^2 + 623962^2 .

It is not a de Polignac number, because 541131542605 - 2⁷ = 541131542477 is a prime.

It is a Duffinian number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 54113154256 + ... + 54113154265.

It is an arithmetic number, because the mean of its divisors is an integer number (162339462783).

Almost surely, 2^541131542605 is an apocalyptic number.

It is an amenable number.

541131542605 is a deficient number, since it is larger than the sum of its proper divisors (108226308527).

541131542605 is a wasteful number, since it uses less digits than its factorization.

541131542605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108226308526.

The product of its (nonzero) digits is 72000, while the sum is 37.

The spelling of 541131542605 in words is "five hundred forty-one billion, one hundred thirty-one million, five hundred forty-two thousand, six hundred five".