216207006501812 has 12 divisors (see below), whose sum is σ = 381710599975236. Its totient is φ = 107146835080320.

The previous prime is 216207006501793. The next prime is 216207006501869. The reversal of 216207006501812 is 218105600702612.

It can be written as a sum of positive squares in 2 ways, for example, as 11807772827536 + 204399233674276 = 3436244^2 + 14296826^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 216207006501812.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 239167042139 + ... + 239167043042.

It is an arithmetic number, because the mean of its divisors is an integer number (31809216664603).

Almost surely, 2^{216207006501812} is an apocalyptic number.

It is an amenable number.

216207006501812 is a deficient number, since it is larger than the sum of its proper divisors (165503593473424).

216207006501812 is a wasteful number, since it uses less digits than its factorization.

216207006501812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478334085298 (or 478334085296 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 41.

The spelling of 216207006501812 in words is "two hundred sixteen trillion, two hundred seven billion, six million, five hundred one thousand, eight hundred twelve".