1228161647043 has 32 divisors (see below), whose sum is σ = 1872710649600. Its totient is φ = 795018369600.

The previous prime is 1228161646993. The next prime is 1228161647051. The reversal of 1228161647043 is 3407461618221.

1228161647043 is a `hidden beast` number, since 1 + 2 + 2 + 81 + 61 + 6 + 470 + 43 = 666.

It is not a de Polignac number, because 1228161647043 - 2¹⁴ = 1228161630659 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1228161647043.

It is not an unprimeable number, because it can be changed into a prime (1228161647093) 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 31 ways as a sum of consecutive naturals, for example, 2395453 + ... + 2862606.

It is an arithmetic number, because the mean of its divisors is an integer number (58522207800).

Almost surely, 2^{1228161647043} is an apocalyptic number.

1228161647043 is a deficient number, since it is larger than the sum of its proper divisors (644549002557).

1228161647043 is a wasteful number, since it uses less digits than its factorization.

1228161647043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5258320 (or 5258314 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The spelling of 1228161647043 in words is "one trillion, two hundred twenty-eight billion, one hundred sixty-one million, six hundred forty-seven thousand, forty-three".