1617155532403 has 2 divisors, whose sum is σ = 1617155532404. Its totient is φ = 1617155532402.

The previous prime is 1617155532353. The next prime is 1617155532431. The reversal of 1617155532403 is 3042355517161.

It is a strong prime.

It is an emirp because it is prime and its reverse (3042355517161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1617155532403 - 2³³ = 1608565597811 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1617155532403.

It is not a weakly prime, because it can be changed into another prime (1617155532203) 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, 808577766201 + 808577766202.

It is an arithmetic number, because the mean of its divisors is an integer number (808577766202).

Almost surely, 2^{1617155532403} is an apocalyptic number.

1617155532403 is a deficient number, since it is larger than the sum of its proper divisors (1).

1617155532403 is an equidigital number, since it uses as much as digits as its factorization.

1617155532403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 378000, while the sum is 43.

The spelling of 1617155532403 in words is "one trillion, six hundred seventeen billion, one hundred fifty-five million, five hundred thirty-two thousand, four hundred three".