215340443535346 has 16 divisors (see below), whose sum is σ = 323229642420384. Its totient is φ = 107597242593504.

The previous prime is 215340443535341. The next prime is 215340443535421. The reversal of 215340443535346 is 643535344043512.

It is a junction number, because it is equal to n+sod(n) for n = 215340443535293 and 215340443535302.

It is not an unprimeable number, because it can be changed into a prime (215340443535341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29392405 + ... + 35980471.

It is an arithmetic number, because the mean of its divisors is an integer number (20201852651274).

Almost surely, 2^{215340443535346} is an apocalyptic number.

215340443535346 is a deficient number, since it is larger than the sum of its proper divisors (107889198885038).

215340443535346 is a wasteful number, since it uses less digits than its factorization.

215340443535346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6599145.

The product of its (nonzero) digits is 31104000, while the sum is 52.

Adding to 215340443535346 its reverse (643535344043512), we get a palindrome (858875787578858).

The spelling of 215340443535346 in words is "two hundred fifteen trillion, three hundred forty billion, four hundred forty-three million, five hundred thirty-five thousand, three hundred forty-six".