1143643257965 has 16 divisors (see below), whose sum is σ = 1477989359616. Its totient is φ = 844507771200.

The previous prime is 1143643257949. The next prime is 1143643257997. The reversal of 1143643257965 is 5697523463411.

It is not a de Polignac number, because 1143643257965 - 2⁴ = 1143643257949 is a prime.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1143643257965.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1726100 + ... + 2294930.

It is an arithmetic number, because the mean of its divisors is an integer number (92374334976).

Almost surely, 2^{1143643257965} is an apocalyptic number.

It is an amenable number.

1143643257965 is a deficient number, since it is larger than the sum of its proper divisors (334346101651).

1143643257965 is a wasteful number, since it uses less digits than its factorization.

1143643257965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 599780.

The product of its digits is 16329600, while the sum is 56.

The spelling of 1143643257965 in words is "one trillion, one hundred forty-three billion, six hundred forty-three million, two hundred fifty-seven thousand, nine hundred sixty-five".