2111305355545 has 8 divisors (see below), whose sum is σ = 2536270345224. Its totient is φ = 1687241672064.

The previous prime is 2111305355461. The next prime is 2111305355581. The reversal of 2111305355545 is 5455535031112.

It can be written as a sum of positive squares in 4 ways, for example, as 291107727936 + 1820197627609 = 539544^2 + 1349147^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2111305355545 - 2⁷ = 2111305355417 is a prime.

It is a super-2 number, since 2×2111305355545² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2111305355498 and 2111305355507.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 225321394 + ... + 225330763.

It is an arithmetic number, because the mean of its divisors is an integer number (317033793153).

Almost surely, 2^{2111305355545} is an apocalyptic number.

It is an amenable number.

2111305355545 is a deficient number, since it is larger than the sum of its proper divisors (424964989679).

2111305355545 is an equidigital number, since it uses as much as digits as its factorization.

2111305355545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450653099.

The product of its (nonzero) digits is 225000, while the sum is 40.

The spelling of 2111305355545 in words is "two trillion, one hundred eleven billion, three hundred five million, three hundred fifty-five thousand, five hundred forty-five".