1216260705453 has 8 divisors (see below), whose sum is σ = 1621720770528. Its totient is φ = 810820555344.

The previous prime is 1216260705433. The next prime is 1216260705469. The reversal of 1216260705453 is 3545070626121.

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

It is not a de Polignac number, because 1216260705453 - 2²⁰ = 1216259656877 is a prime.

It is a super-3 number, since 3×1216260705453³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216260705433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4835650 + ... + 5080947.

It is an arithmetic number, because the mean of its divisors is an integer number (202715096316).

Almost surely, 2^{1216260705453} is an apocalyptic number.

It is an amenable number.

1216260705453 is a deficient number, since it is larger than the sum of its proper divisors (405460065075).

1216260705453 is an equidigital number, since it uses as much as digits as its factorization.

1216260705453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9957483.

The product of its (nonzero) digits is 302400, while the sum is 42.

The spelling of 1216260705453 in words is "one trillion, two hundred sixteen billion, two hundred sixty million, seven hundred five thousand, four hundred fifty-three".