1216645527422 has 16 divisors (see below), whose sum is σ = 2080959319152. Its totient is φ = 528497604480.

The previous prime is 1216645527407. The next prime is 1216645527431. The reversal of 1216645527422 is 2247255466121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1376295404 + ... + 1376296287.

It is an arithmetic number, because the mean of its divisors is an integer number (130059957447).

Almost surely, 2^{1216645527422} is an apocalyptic number.

1216645527422 is a deficient number, since it is larger than the sum of its proper divisors (864313791730).

1216645527422 is a wasteful number, since it uses less digits than its factorization.

1216645527422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2752591723.

The product of its digits is 1612800, while the sum is 47.

The spelling of 1216645527422 in words is "one trillion, two hundred sixteen billion, six hundred forty-five million, five hundred twenty-seven thousand, four hundred twenty-two".