211054320545 has 8 divisors (see below), whose sum is σ = 253274262696. Its totient is φ = 168837404416.

The previous prime is 211054320511. The next prime is 211054320551. The reversal of 211054320545 is 545023450112.

It can be written as a sum of positive squares in 4 ways, for example, as 23541071761 + 187513248784 = 153431^2 + 433028^2 .

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 211054320545 - 2¹⁴ = 211054304161 is a prime.

It is a Duffinian 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, 600122 + ... + 884451.

It is an arithmetic number, because the mean of its divisors is an integer number (31659282837).

Almost surely, 2^211054320545 is an apocalyptic number.

It is an amenable number.

211054320545 is a deficient number, since it is larger than the sum of its proper divisors (42219942151).

211054320545 is a wasteful number, since it uses less digits than its factorization.

211054320545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1513011.

The product of its (nonzero) digits is 24000, while the sum is 32.

Adding to 211054320545 its reverse (545023450112), we get a palindrome (756077770657).

The spelling of 211054320545 in words is "two hundred eleven billion, fifty-four million, three hundred twenty thousand, five hundred forty-five".