162803542817 has 2 divisors, whose sum is σ = 162803542818. Its totient is φ = 162803542816.

The previous prime is 162803542807. The next prime is 162803542871. The reversal of 162803542817 is 718245308261.

Together with next prime (162803542871) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 147007829056 + 15795713761 = 383416^2 + 125681^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-162803542817 is a prime.

It is not a weakly prime, because it can be changed into another prime (162803542807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81401771408 + 81401771409.

It is an arithmetic number, because the mean of its divisors is an integer number (81401771409).

Almost surely, 2^162803542817 is an apocalyptic number.

It is an amenable number.

162803542817 is a deficient number, since it is larger than the sum of its proper divisors (1).

162803542817 is an equidigital number, since it uses as much as digits as its factorization.

162803542817 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 645120, while the sum is 47.

The spelling of 162803542817 in words is "one hundred sixty-two billion, eight hundred three million, five hundred forty-two thousand, eight hundred seventeen".