215342642223 has 12 divisors (see below), whose sum is σ = 312629422248. Its totient is φ = 142833020400.

The previous prime is 215342642219. The next prime is 215342642261. The reversal of 215342642223 is 322246243512.

215342642223 is a `hidden beast` number, since 2 + 1 + 5 + 3 + 4 + 2 + 642 + 2 + 2 + 3 = 666.

It is not a de Polignac number, because 215342642223 - 2² = 215342642219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215342642023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60726553 + ... + 60730098.

It is an arithmetic number, because the mean of its divisors is an integer number (26052451854).

Almost surely, 2^215342642223 is an apocalyptic number.

215342642223 is a deficient number, since it is larger than the sum of its proper divisors (97286780025).

215342642223 is a wasteful number, since it uses less digits than its factorization.

215342642223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121456854 (or 121456851 counting only the distinct ones).

The product of its digits is 138240, while the sum is 36.

Adding to 215342642223 its reverse (322246243512), we get a palindrome (537588885735).

The spelling of 215342642223 in words is "two hundred fifteen billion, three hundred forty-two million, six hundred forty-two thousand, two hundred twenty-three".