216528403615012 has 48 divisors (see below), whose sum is σ = 396271620864000. Its totient is φ = 103328877418272.

The previous prime is 216528403614983. The next prime is 216528403615019. The reversal of 216528403615012 is 210516304825612.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is not an unprimeable number, because it can be changed into a prime (216528403615019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106951123 + ... + 108956869.

It is an arithmetic number, because the mean of its divisors is an integer number (8255658768000).

Almost surely, 2^{216528403615012} is an apocalyptic number.

It is an amenable number.

216528403615012 is a deficient number, since it is larger than the sum of its proper divisors (179743217248988).

216528403615012 is a wasteful number, since it uses less digits than its factorization.

216528403615012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2008360 (or 2008358 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 46.

The spelling of 216528403615012 in words is "two hundred sixteen trillion, five hundred twenty-eight billion, four hundred three million, six hundred fifteen thousand, twelve".