10203116818729 has 2 divisors, whose sum is σ = 10203116818730. Its totient is φ = 10203116818728.

The previous prime is 10203116818663. The next prime is 10203116818747. The reversal of 10203116818729 is 92781861130201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6468069697600 + 3735047121129 = 2543240^2 + 1932627^2 .

It is a cyclic number.

It is not a de Polignac number, because 10203116818729 - 2⁹ = 10203116818217 is a prime.

It is not a weakly prime, because it can be changed into another prime (10203116818229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5101558409364 + 5101558409365.

It is an arithmetic number, because the mean of its divisors is an integer number (5101558409365).

Almost surely, 2^{10203116818729} is an apocalyptic number.

It is an amenable number.

10203116818729 is a deficient number, since it is larger than the sum of its proper divisors (1).

10203116818729 is an equidigital number, since it uses as much as digits as its factorization.

10203116818729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 49.

The spelling of 10203116818729 in words is "ten trillion, two hundred three billion, one hundred sixteen million, eight hundred eighteen thousand, seven hundred twenty-nine".