4540045220545 has 16 divisors (see below), whose sum is σ = 5462613308880. Its totient is φ = 3622332043264.

The previous prime is 4540045220497. The next prime is 4540045220563. The reversal of 4540045220545 is 5450225400454.

It can be written as a sum of positive squares in 8 ways, for example, as 788897463601 + 3751147756944 = 888199^2 + 1936788^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4540045220545 is a prime.

It is a super-2 number, since 2×4540045220545² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4540045220498 and 4540045220507.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19945617 + ... + 20171953.

It is an arithmetic number, because the mean of its divisors is an integer number (341413331805).

Almost surely, 2^{4540045220545} is an apocalyptic number.

It is an amenable number.

4540045220545 is a deficient number, since it is larger than the sum of its proper divisors (922568088335).

4540045220545 is a wasteful number, since it uses less digits than its factorization.

4540045220545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237044.

The product of its (nonzero) digits is 640000, while the sum is 40.

The spelling of 4540045220545 in words is "four trillion, five hundred forty billion, forty-five million, two hundred twenty thousand, five hundred forty-five".