213549488640001 has 4 divisors (see below), whose sum is σ = 217578724274772. Its totient is φ = 209520253005232.

The previous prime is 213549488639989. The next prime is 213549488640049. The reversal of 213549488640001 is 100046884945312.

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 193545552564225 + 20003936075776 = 13912065^2 + 4472576^2 .

It is a cyclic number.

It is not a de Polignac number, because 213549488640001 - 2⁵ = 213549488639969 is a prime.

It is a super-2 number, since 2×213549488640001² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213549488646001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2014617817306 + ... + 2014617817411.

It is an arithmetic number, because the mean of its divisors is an integer number (54394681068693).

Almost surely, 2^{213549488640001} is an apocalyptic number.

It is an amenable number.

213549488640001 is a deficient number, since it is larger than the sum of its proper divisors (4029235634771).

213549488640001 is an equidigital number, since it uses as much as digits as its factorization.

213549488640001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4029235634770.

The product of its (nonzero) digits is 6635520, while the sum is 55.

The spelling of 213549488640001 in words is "two hundred thirteen trillion, five hundred forty-nine billion, four hundred eighty-eight million, six hundred forty thousand, one".