215443642102 has 32 divisors (see below), whose sum is σ = 382269323520. Its totient is φ = 90106331040.

The previous prime is 215443641997. The next prime is 215443642111. The reversal of 215443642102 is 201246344512.

215443642102 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 15 ways as a sum of consecutive naturals, for example, 9469524 + ... + 9492247.

It is an arithmetic number, because the mean of its divisors is an integer number (11945916360).

Almost surely, 2^215443642102 is an apocalyptic number.

215443642102 is a deficient number, since it is larger than the sum of its proper divisors (166825681418).

215443642102 is a wasteful number, since it uses less digits than its factorization.

215443642102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18961828.

The product of its (nonzero) digits is 46080, while the sum is 34.

Adding to 215443642102 its reverse (201246344512), we get a palindrome (416689986614).

The spelling of 215443642102 in words is "two hundred fifteen billion, four hundred forty-three million, six hundred forty-two thousand, one hundred two".