215440102443 has 8 divisors (see below), whose sum is σ = 287262579856. Its totient is φ = 143622180000.

The previous prime is 215440102441. The next prime is 215440102469. The reversal of 215440102443 is 344201044512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 215440102443 - 2¹ = 215440102441 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 215440102443.

It is not an unprimeable number, because it can be changed into a prime (215440102441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1026808 + ... + 1218693.

It is an arithmetic number, because the mean of its divisors is an integer number (35907822482).

Almost surely, 2^215440102443 is an apocalyptic number.

215440102443 is a deficient number, since it is larger than the sum of its proper divisors (71822477413).

215440102443 is a wasteful number, since it uses less digits than its factorization.

215440102443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2277485.

The product of its (nonzero) digits is 15360, while the sum is 30.

Adding to 215440102443 its reverse (344201044512), we get a palindrome (559641146955).

The spelling of 215440102443 in words is "two hundred fifteen billion, four hundred forty million, one hundred two thousand, four hundred forty-three".