1216409592839 has 4 divisors (see below), whose sum is σ = 1390182391824. Its totient is φ = 1042636793856.

The previous prime is 1216409592833. The next prime is 1216409592851. The reversal of 1216409592839 is 9382959046121.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1216409592839 - 2³² = 1212114625543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216409592833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86886399482 + ... + 86886399495.

It is an arithmetic number, because the mean of its divisors is an integer number (347545597956).

Almost surely, 2^{1216409592839} is an apocalyptic number.

1216409592839 is a deficient number, since it is larger than the sum of its proper divisors (173772798985).

1216409592839 is an equidigital number, since it uses as much as digits as its factorization.

1216409592839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173772798984.

The product of its (nonzero) digits is 8398080, while the sum is 59.

The spelling of 1216409592839 in words is "one trillion, two hundred sixteen billion, four hundred nine million, five hundred ninety-two thousand, eight hundred thirty-nine".