215232313155443 has 4 divisors (see below), whose sum is σ = 215232621344640. Its totient is φ = 215232004966248.

The previous prime is 215232313155407. The next prime is 215232313155451. The reversal of 215232313155443 is 344551313232512.

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

It is a cyclic number.

It is not a de Polignac number, because 215232313155443 - 2²⁸ = 215232044719987 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 215232313155394 and 215232313155403.

It is not an unprimeable number, because it can be changed into a prime (215232313155493) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153044648 + ... + 154444581.

It is an arithmetic number, because the mean of its divisors is an integer number (53808155336160).

Almost surely, 2^{215232313155443} is an apocalyptic number.

215232313155443 is a deficient number, since it is larger than the sum of its proper divisors (308189197).

215232313155443 is an equidigital number, since it uses as much as digits as its factorization.

215232313155443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308189196.

The product of its digits is 1296000, while the sum is 44.

Adding to 215232313155443 its reverse (344551313232512), we get a palindrome (559783626387955).

The spelling of 215232313155443 in words is "two hundred fifteen trillion, two hundred thirty-two billion, three hundred thirteen million, one hundred fifty-five thousand, four hundred forty-three".