1244247431445 has 12 divisors (see below), whose sum is σ = 2156695547916. Its totient is φ = 663598630080.

The previous prime is 1244247431429. The next prime is 1244247431459. The reversal of 1244247431445 is 5441347424421.

1244247431445 is a `hidden beast` number, since 1 + 244 + 24 + 74 + 314 + 4 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 177222476484 + 1067024954961 = 420978^2 + 1032969^2 .

It is not a de Polignac number, because 1244247431445 - 2⁴ = 1244247431429 is a prime.

It is a super-3 number, since 3×1244247431445³ (a number of 37 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 27649942921 = 1244247431445 / (1 + 2 + 4 + 4 + 2 + 4 + 7 + 4 + 3 + 1 + 4 + 4 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 1244247431445.

It is a congruent number.

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 in 11 ways as a sum of consecutive naturals, for example, 13824971416 + ... + 13824971505.

It is an arithmetic number, because the mean of its divisors is an integer number (179724628993).

Almost surely, 2^{1244247431445} is an apocalyptic number.

1244247431445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1244247431445 is a deficient number, since it is larger than the sum of its proper divisors (912448116471).

1244247431445 is a wasteful number, since it uses less digits than its factorization.

1244247431445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27649942932 (or 27649942929 counting only the distinct ones).

The product of its digits is 1720320, while the sum is 45.

The spelling of 1244247431445 in words is "one trillion, two hundred forty-four billion, two hundred forty-seven million, four hundred thirty-one thousand, four hundred forty-five".