213772612445 has 8 divisors (see below), whose sum is σ = 293173868544. Its totient is φ = 146586934224.

The previous prime is 213772612441. The next prime is 213772612447. The reversal of 213772612445 is 544216277312.

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 213772612445 - 2² = 213772612441 is a prime.

It is a super-3 number, since 3×213772612445³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213772612396 and 213772612405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213772612441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3053894429 + ... + 3053894498.

It is an arithmetic number, because the mean of its divisors is an integer number (36646733568).

Almost surely, 2^213772612445 is an apocalyptic number.

It is an amenable number.

213772612445 is a deficient number, since it is larger than the sum of its proper divisors (79401256099).

213772612445 is an equidigital number, since it uses as much as digits as its factorization.

213772612445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6107788939.

The product of its digits is 564480, while the sum is 44.

Adding to 213772612445 its reverse (544216277312), we get a palindrome (757988889757).

The spelling of 213772612445 in words is "two hundred thirteen billion, seven hundred seventy-two million, six hundred twelve thousand, four hundred forty-five".