1216802427879 has 8 divisors (see below), whose sum is σ = 1624934290032. Its totient is φ = 809936092160.

The previous prime is 1216802427859. The next prime is 1216802427899. The reversal of 1216802427879 is 9787242086121.

It is an interprime number because it is at equal distance from previous prime (1216802427859) and next prime (1216802427899).

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

It is a cyclic number.

It is not a de Polignac number, because 1216802427879 - 2⁷ = 1216802427751 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216802427859) 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 7 ways as a sum of consecutive naturals, for example, 316379364 + ... + 316383209.

It is an arithmetic number, because the mean of its divisors is an integer number (203116786254).

Almost surely, 2^{1216802427879} is an apocalyptic number.

1216802427879 is a deficient number, since it is larger than the sum of its proper divisors (408131862153).

1216802427879 is an equidigital number, since it uses as much as digits as its factorization.

1216802427879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632763217.

The product of its (nonzero) digits is 5419008, while the sum is 57.

The spelling of 1216802427879 in words is "one trillion, two hundred sixteen billion, eight hundred two million, four hundred twenty-seven thousand, eight hundred seventy-nine".