1223844849736 has 8 divisors (see below), whose sum is σ = 2294709093270. Its totient is φ = 611922424864.

The previous prime is 1223844849679. The next prime is 1223844849749. The reversal of 1223844849736 is 6379484483221.

It can be written as a sum of positive squares in only one way, i.e., 1191167056836 + 32677792900 = 1091406^2 + 180770^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×1223844849736³ (a number of 37 digits) contains 333 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 76490303101 + ... + 76490303116.

Almost surely, 2^{1223844849736} is an apocalyptic number.

It is an amenable number.

1223844849736 is a deficient number, since it is larger than the sum of its proper divisors (1070864243534).

1223844849736 is a wasteful number, since it uses less digits than its factorization.

1223844849736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152980606223 (or 152980606219 counting only the distinct ones).

The product of its digits is 55738368, while the sum is 61.

The spelling of 1223844849736 in words is "one trillion, two hundred twenty-three billion, eight hundred forty-four million, eight hundred forty-nine thousand, seven hundred thirty-six".