215543413323 has 48 divisors (see below), whose sum is σ = 371945267200. Its totient is φ = 117685638720.

The previous prime is 215543413289. The next prime is 215543413339. The reversal of 215543413323 is 323314345512.

215543413323 is a `hidden beast` number, since 21 + 5 + 543 + 41 + 33 + 23 = 666.

It is not a de Polignac number, because 215543413323 - 2⁶ = 215543413259 is a prime.

It is a super-2 number, since 2×215543413323² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (215543413373) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 544228 + ... + 852801.

Almost surely, 2^215543413323 is an apocalyptic number.

215543413323 is a deficient number, since it is larger than the sum of its proper divisors (156401853877).

215543413323 is a wasteful number, since it uses less digits than its factorization.

215543413323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1397152 (or 1397149 counting only the distinct ones).

The product of its digits is 129600, while the sum is 36.

Adding to 215543413323 its reverse (323314345512), we get a palindrome (538857758835).

The spelling of 215543413323 in words is "two hundred fifteen billion, five hundred forty-three million, four hundred thirteen thousand, three hundred twenty-three".