1216612534424 has 16 divisors (see below), whose sum is σ = 2607026859600. Its totient is φ = 521405371872.

The previous prime is 1216612534393. The next prime is 1216612534433. The reversal of 1216612534424 is 4244352166121.

It is a congruent number.

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, 10862611859 + ... + 10862611970.

It is an arithmetic number, because the mean of its divisors is an integer number (162939178725).

Almost surely, 2^{1216612534424} is an apocalyptic number.

1216612534424 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1216612534424 is an abundant number, since it is smaller than the sum of its proper divisors (1390414325176).

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

1216612534424 is a wasteful number, since it uses less digits than its factorization.

1216612534424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21725223842 (or 21725223838 counting only the distinct ones).

The product of its digits is 276480, while the sum is 41.

The spelling of 1216612534424 in words is "one trillion, two hundred sixteen billion, six hundred twelve million, five hundred thirty-four thousand, four hundred twenty-four".