240534305513545 has 4 divisors (see below), whose sum is σ = 288641166616260. Its totient is φ = 192427444410832.

The previous prime is 240534305513497. The next prime is 240534305513561. The reversal of 240534305513545 is 545315503435042.

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 116272743944256 + 124261561569289 = 10782984^2 + 11147267^2 .

It is a cyclic number.

It is not a de Polignac number, because 240534305513545 - 2³¹ = 240532158029897 is a prime.

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, 24053430551350 + ... + 24053430551359.

It is an arithmetic number, because the mean of its divisors is an integer number (72160291654065).

Almost surely, 2^{240534305513545} is an apocalyptic number.

It is an amenable number.

240534305513545 is a deficient number, since it is larger than the sum of its proper divisors (48106861102715).

240534305513545 is an equidigital number, since it uses as much as digits as its factorization.

240534305513545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48106861102714.

The product of its (nonzero) digits is 10800000, while the sum is 49.

Adding to 240534305513545 its reverse (545315503435042), we get a palindrome (785849808948587).

The spelling of 240534305513545 in words is "two hundred forty trillion, five hundred thirty-four billion, three hundred five million, five hundred thirteen thousand, five hundred forty-five".