1216634105304 has 48 divisors (see below), whose sum is σ = 3341459880720. Its totient is φ = 399832802880.

The previous prime is 1216634105279. The next prime is 1216634105321. The reversal of 1216634105304 is 4035014366121.

1216634105304 is a `hidden beast` number, since 1 + 2 + 1 + 6 + 6 + 341 + 0 + 5 + 304 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 11 ways as a sum of consecutive naturals, for example, 118992747 + ... + 119002970.

It is an arithmetic number, because the mean of its divisors is an integer number (69613747515).

Almost surely, 2^{1216634105304} is an apocalyptic number.

It is an amenable number.

1216634105304 is an abundant number, since it is smaller than the sum of its proper divisors (2124825775416).

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

1216634105304 is a wasteful number, since it uses less digits than its factorization.

1216634105304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237995800 (or 237995793 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The spelling of 1216634105304 in words is "one trillion, two hundred sixteen billion, six hundred thirty-four million, one hundred five thousand, three hundred four".