1321440476143 has 2 divisors, whose sum is σ = 1321440476144. Its totient is φ = 1321440476142.

The previous prime is 1321440476099. The next prime is 1321440476183. The reversal of 1321440476143 is 3416740441231.

It is an a-pointer prime, because the next prime (1321440476183) can be obtained adding 1321440476143 to its sum of digits (40).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1321440476143 - 2²¹ = 1321438378991 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1321440476096 and 1321440476105.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1321440476183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660720238071 + 660720238072.

It is an arithmetic number, because the mean of its divisors is an integer number (660720238072).

Almost surely, 2^{1321440476143} is an apocalyptic number.

1321440476143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321440476143 is an equidigital number, since it uses as much as digits as its factorization.

1321440476143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 193536, while the sum is 40.

The spelling of 1321440476143 in words is "one trillion, three hundred twenty-one billion, four hundred forty million, four hundred seventy-six thousand, one hundred forty-three".