2171086418513 has 2 divisors, whose sum is σ = 2171086418514. Its totient is φ = 2171086418512.

The previous prime is 2171086418509. The next prime is 2171086418563. The reversal of 2171086418513 is 3158146801712.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2170766115904 + 320302609 = 1473352^2 + 17897^2 .

It is a cyclic number.

It is not a de Polignac number, because 2171086418513 - 2² = 2171086418509 is a prime.

It is not a weakly prime, because it can be changed into another prime (2171086418563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1085543209256 + 1085543209257.

It is an arithmetic number, because the mean of its divisors is an integer number (1085543209257).

Almost surely, 2^{2171086418513} is an apocalyptic number.

It is an amenable number.

2171086418513 is a deficient number, since it is larger than the sum of its proper divisors (1).

2171086418513 is an equidigital number, since it uses as much as digits as its factorization.

2171086418513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 322560, while the sum is 47.

The spelling of 2171086418513 in words is "two trillion, one hundred seventy-one billion, eighty-six million, four hundred eighteen thousand, five hundred thirteen".