1216634105306 has 8 divisors (see below), whose sum is σ = 1825698789684. Its totient is φ = 608067842080.

The previous prime is 1216634105279. The next prime is 1216634105321. The reversal of 1216634105306 is 6035014366121.

It can be written as a sum of positive squares in 2 ways, for example, as 819848757025 + 396785348281 = 905455^2 + 629909^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 1216634105306.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124599185 + ... + 124608948.

Almost surely, 2^{1216634105306} is an apocalyptic number.

1216634105306 is a deficient number, since it is larger than the sum of its proper divisors (609064684378).

1216634105306 is a wasteful number, since it uses less digits than its factorization.

1216634105306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249210576.

The product of its (nonzero) digits is 77760, while the sum is 38.

The spelling of 1216634105306 in words is "one trillion, two hundred sixteen billion, six hundred thirty-four million, one hundred five thousand, three hundred six".