218015485446 has 32 divisors (see below), whose sum is σ = 500705424000. Its totient is φ = 62588177280.

The previous prime is 218015485417. The next prime is 218015485447. The reversal of 218015485446 is 644584510812.

It is a junction number, because it is equal to n+sod(n) for n = 218015485395 and 218015485404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218015485447) 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 15 ways as a sum of consecutive naturals, for example, 86926771 + ... + 86929278.

It is an arithmetic number, because the mean of its divisors is an integer number (15647044500).

Almost surely, 2^218015485446 is an apocalyptic number.

218015485446 is an abundant number, since it is smaller than the sum of its proper divisors (282689938554).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

218015485446 is a wasteful number, since it uses less digits than its factorization.

218015485446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173856084.

The product of its (nonzero) digits is 1228800, while the sum is 48.

The spelling of 218015485446 in words is "two hundred eighteen billion, fifteen million, four hundred eighty-five thousand, four hundred forty-six".