1378141221249 has 48 divisors (see below), whose sum is σ = 2204767236672. Its totient is φ = 824158468224.

The previous prime is 1378141221199. The next prime is 1378141221283. The reversal of 1378141221249 is 9421221418731.

1378141221249 is a `hidden beast` number, since 1 + 37 + 81 + 412 + 2 + 124 + 9 = 666.

It is not a de Polignac number, because 1378141221249 - 2⁹ = 1378141220737 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1378141226249) 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 47 ways as a sum of consecutive naturals, for example, 295854 + ... + 1686360.

It is an arithmetic number, because the mean of its divisors is an integer number (45932650764).

Almost surely, 2^{1378141221249} is an apocalyptic number.

It is an amenable number.

1378141221249 is a deficient number, since it is larger than the sum of its proper divisors (826626015423).

1378141221249 is a wasteful number, since it uses less digits than its factorization.

1378141221249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1390766 (or 1390763 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The spelling of 1378141221249 in words is "one trillion, three hundred seventy-eight billion, one hundred forty-one million, two hundred twenty-one thousand, two hundred forty-nine".