4111205645 has 4 divisors (see below), whose sum is σ = 4933446780. Its totient is φ = 3288964512.

The previous prime is 4111205629. The next prime is 4111205653. The reversal of 4111205645 is 5465021114.

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 525830761 + 3585374884 = 22931^2 + 59878^2 .

It is a cyclic number.

It is not a de Polignac number, because 4111205645 - 2⁴ = 4111205629 is a prime.

It is a super-3 number, since 3×4111205645³ (a number of 30 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 411120560 + ... + 411120569.

It is an arithmetic number, because the mean of its divisors is an integer number (1233361695).

Almost surely, 2^4111205645 is an apocalyptic number.

It is an amenable number.

4111205645 is a deficient number, since it is larger than the sum of its proper divisors (822241135).

4111205645 is an equidigital number, since it uses as much as digits as its factorization.

4111205645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 822241134.

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 4111205645 is about 64118.6840554296. The cubic root of 4111205645 is about 1601.9774567264.

Adding to 4111205645 its reverse (5465021114), we get a palindrome (9576226759).

The spelling of 4111205645 in words is "four billion, one hundred eleven million, two hundred five thousand, six hundred forty-five".