1216455355235 has 8 divisors (see below), whose sum is σ = 1536575185680. Its totient is φ = 921945111264.

The previous prime is 1216455355147. The next prime is 1216455355237. The reversal of 1216455355235 is 5325535546121.

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

It is a cyclic number.

It is not a de Polignac number, because 1216455355235 - 2⁸ = 1216455354979 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1216455355235.

It is not an unprimeable number, because it can be changed into a prime (1216455355237) 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, 6402396512 + ... + 6402396701.

It is an arithmetic number, because the mean of its divisors is an integer number (192071898210).

Almost surely, 2^{1216455355235} is an apocalyptic number.

1216455355235 is a deficient number, since it is larger than the sum of its proper divisors (320119830445).

1216455355235 is a wasteful number, since it uses less digits than its factorization.

1216455355235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12804793237.

The product of its digits is 2700000, while the sum is 47.

The spelling of 1216455355235 in words is "one trillion, two hundred sixteen billion, four hundred fifty-five million, three hundred fifty-five thousand, two hundred thirty-five".