43216421215 has 64 divisors (see below), whose sum is σ = 60550963200. Its totient is φ = 29280528000.

The previous prime is 43216421203. The next prime is 43216421221. The reversal of 43216421215 is 51212461234.

It is not a de Polignac number, because 43216421215 - 2²¹ = 43214324063 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 16251556 + ... + 16254214.

It is an arithmetic number, because the mean of its divisors is an integer number (946108800).

Almost surely, 2^43216421215 is an apocalyptic number.

43216421215 is a deficient number, since it is larger than the sum of its proper divisors (17334541985).

43216421215 is a wasteful number, since it uses less digits than its factorization.

43216421215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2948.

The product of its digits is 11520, while the sum is 31.

Adding to 43216421215 its reverse (51212461234), we get a palindrome (94428882449).

The spelling of 43216421215 in words is "forty-three billion, two hundred sixteen million, four hundred twenty-one thousand, two hundred fifteen".