1216026634633 has 4 divisors (see below), whose sum is σ = 1216049056000. Its totient is φ = 1216004213268.

The previous prime is 1216026634601. The next prime is 1216026634649. The reversal of 1216026634633 is 3364366206121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1216026634633 - 2⁵ = 1216026634601 is a prime.

It is a super-2 number, since 2×1216026634633² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1216026634633.

It is not an unprimeable number, because it can be changed into a prime (1216026034633) 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 3 ways as a sum of consecutive naturals, for example, 11129133 + ... + 11237866.

It is an arithmetic number, because the mean of its divisors is an integer number (304012264000).

Almost surely, 2^{1216026634633} is an apocalyptic number.

It is an amenable number.

1216026634633 is a deficient number, since it is larger than the sum of its proper divisors (22421367).

1216026634633 is an equidigital number, since it uses as much as digits as its factorization.

1216026634633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22421366.

The product of its (nonzero) digits is 559872, while the sum is 43.

The spelling of 1216026634633 in words is "one trillion, two hundred sixteen billion, twenty-six million, six hundred thirty-four thousand, six hundred thirty-three".