1353978205343 has 2 divisors, whose sum is σ = 1353978205344. Its totient is φ = 1353978205342.

The previous prime is 1353978205271. The next prime is 1353978205439. The reversal of 1353978205343 is 3435028793531.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1353978205343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1353978205843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 676989102671 + 676989102672.

It is an arithmetic number, because the mean of its divisors is an integer number (676989102672).

Almost surely, 2^{1353978205343} is an apocalyptic number.

1353978205343 is a deficient number, since it is larger than the sum of its proper divisors (1).

1353978205343 is an equidigital number, since it uses as much as digits as its factorization.

1353978205343 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8164800, while the sum is 53.

The spelling of 1353978205343 in words is "one trillion, three hundred fifty-three billion, nine hundred seventy-eight million, two hundred five thousand, three hundred forty-three".