1216580176852 has 24 divisors (see below), whose sum is σ = 2136029140224. Its totient is φ = 606286672992.

The previous prime is 1216580176841. The next prime is 1216580176859. The reversal of 1216580176852 is 2586710856121.

It is a happy number.

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1216580176852.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216580176859) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 9582613 + ... + 9708739.

It is an arithmetic number, because the mean of its divisors is an integer number (89001214176).

Almost surely, 2^{1216580176852} is an apocalyptic number.

It is an amenable number.

1216580176852 is a deficient number, since it is larger than the sum of its proper divisors (919448963372).

1216580176852 is a wasteful number, since it uses less digits than its factorization.

1216580176852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134055 (or 134053 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 52.

The spelling of 1216580176852 in words is "one trillion, two hundred sixteen billion, five hundred eighty million, one hundred seventy-six thousand, eight hundred fifty-two".