1302203853991 has 2 divisors, whose sum is σ = 1302203853992. Its totient is φ = 1302203853990.

The previous prime is 1302203853989. The next prime is 1302203854001. The reversal of 1302203853991 is 1993583022031.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1302203853991 - 2¹ = 1302203853989 is a prime.

Together with 1302203853989, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1302203853971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 651101926995 + 651101926996.

It is an arithmetic number, because the mean of its divisors is an integer number (651101926996).

Almost surely, 2^{1302203853991} is an apocalyptic number.

1302203853991 is a deficient number, since it is larger than the sum of its proper divisors (1).

1302203853991 is an equidigital number, since it uses as much as digits as its factorization.

1302203853991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 349920, while the sum is 46.

The spelling of 1302203853991 in words is "one trillion, three hundred two billion, two hundred three million, eight hundred fifty-three thousand, nine hundred ninety-one".