213006191545 has 16 divisors (see below), whose sum is σ = 292453649280. Its totient is φ = 145895952384.

The previous prime is 213006191467. The next prime is 213006191561. The reversal of 213006191545 is 545191600312.

It is not a de Polignac number, because 213006191545 - 2¹¹ = 213006189497 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3415240 + ... + 3477049.

It is an arithmetic number, because the mean of its divisors is an integer number (18278353080).

Almost surely, 2^213006191545 is an apocalyptic number.

It is an amenable number.

213006191545 is a deficient number, since it is larger than the sum of its proper divisors (79447457735).

213006191545 is an equidigital number, since it uses as much as digits as its factorization.

213006191545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6893184.

The product of its (nonzero) digits is 32400, while the sum is 37.

Adding to 213006191545 its reverse (545191600312), we get a palindrome (758197791857).

The spelling of 213006191545 in words is "two hundred thirteen billion, six million, one hundred ninety-one thousand, five hundred forty-five".