213042653662 has 4 divisors (see below), whose sum is σ = 319563980496. Its totient is φ = 106521326830.

The previous prime is 213042653641. The next prime is 213042653699. The reversal of 213042653662 is 266356240312.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53260663414 + ... + 53260663417.

It is an arithmetic number, because the mean of its divisors is an integer number (79890995124).

Almost surely, 2^213042653662 is an apocalyptic number.

213042653662 is a deficient number, since it is larger than the sum of its proper divisors (106521326834).

213042653662 is a wasteful number, since it uses less digits than its factorization.

213042653662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106521326833.

The product of its (nonzero) digits is 311040, while the sum is 40.

Adding to 213042653662 its reverse (266356240312), we get a palindrome (479398893974).

The spelling of 213042653662 in words is "two hundred thirteen billion, forty-two million, six hundred fifty-three thousand, six hundred sixty-two".