211355060025013 has 4 divisors (see below), whose sum is σ = 211358887797420. Its totient is φ = 211351232252608.

The previous prime is 211355060024909. The next prime is 211355060025037. The reversal of 211355060025013 is 310520060553112.

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 129126109576689 + 82228950448324 = 11363367^2 + 9068018^2 .

It is a cyclic number.

It is not a de Polignac number, because 211355060025013 - 2¹⁷ = 211355059893941 is a prime.

It is a super-2 number, since 2×211355060025013² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 211355060025013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211355060035013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1913803378 + ... + 1913913811.

It is an arithmetic number, because the mean of its divisors is an integer number (52839721949355).

Almost surely, 2^{211355060025013} is an apocalyptic number.

It is an amenable number.

211355060025013 is a deficient number, since it is larger than the sum of its proper divisors (3827772407).

211355060025013 is an equidigital number, since it uses as much as digits as its factorization.

211355060025013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3827772406.

The product of its (nonzero) digits is 27000, while the sum is 34.

The spelling of 211355060025013 in words is "two hundred eleven trillion, three hundred fifty-five billion, sixty million, twenty-five thousand, thirteen".