211611145045 has 8 divisors (see below), whose sum is σ = 254484208440. Its totient is φ = 168921693120.

The previous prime is 211611145027. The next prime is 211611145051. The reversal of 211611145045 is 540541116112.

It can be written as a sum of positive squares in 4 ways, for example, as 138086001 + 211473059044 = 11751^2 + 459862^2 .

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

It is not a de Polignac number, because 211611145045 - 2¹⁹ = 211610620757 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211611144998 and 211611145016.

It is a congruent number.

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, 45900330 + ... + 45904939.

It is an arithmetic number, because the mean of its divisors is an integer number (31810526055).

Almost surely, 2^211611145045 is an apocalyptic number.

It is an amenable number.

211611145045 is a deficient number, since it is larger than the sum of its proper divisors (42873063395).

211611145045 is an equidigital number, since it uses as much as digits as its factorization.

211611145045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91805735.

The product of its (nonzero) digits is 4800, while the sum is 31.

The spelling of 211611145045 in words is "two hundred eleven billion, six hundred eleven million, one hundred forty-five thousand, forty-five".