215223111323415 has 48 divisors (see below), whose sum is σ = 401934183661920. Its totient is φ = 105907366667520.

The previous prime is 215223111323377. The next prime is 215223111323551. The reversal of 215223111323415 is 514323111322512.

215223111323415 is a `hidden beast` number, since 2 + 1 + 5 + 2 + 2 + 311 + 1 + 323 + 4 + 15 = 666.

215223111323415 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 215223111323415 - 2¹⁵ = 215223111290647 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 215223111323415.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 83145376 + ... + 85694805.

It is an arithmetic number, because the mean of its divisors is an integer number (8373628826290).

Almost surely, 2^{215223111323415} is an apocalyptic number.

215223111323415 is a deficient number, since it is larger than the sum of its proper divisors (186711072338505).

215223111323415 is a wasteful number, since it uses less digits than its factorization.

215223111323415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168842384 (or 168842381 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

Adding to 215223111323415 its reverse (514323111322512), we get a palindrome (729546222645927).

The spelling of 215223111323415 in words is "two hundred fifteen trillion, two hundred twenty-three billion, one hundred eleven million, three hundred twenty-three thousand, four hundred fifteen".