1143888313447 has 8 divisors (see below), whose sum is σ = 1262912837760. Its totient is φ = 1027369568760.

The previous prime is 1143888313441. The next prime is 1143888313459. The reversal of 1143888313447 is 7443138883411.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1143888313447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143888313441) 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, 626443947 + ... + 626445772.

It is an arithmetic number, because the mean of its divisors is an integer number (157864104720).

Almost surely, 2^{1143888313447} is an apocalyptic number.

1143888313447 is a deficient number, since it is larger than the sum of its proper divisors (119024524313).

1143888313447 is a wasteful number, since it uses less digits than its factorization.

1143888313447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1252889813.

The product of its digits is 6193152, while the sum is 55.

The spelling of 1143888313447 in words is "one trillion, one hundred forty-three billion, eight hundred eighty-eight million, three hundred thirteen thousand, four hundred forty-seven".