2064390989117 has 2 divisors, whose sum is σ = 2064390989118. Its totient is φ = 2064390989116.

The previous prime is 2064390989113. The next prime is 2064390989131. The reversal of 2064390989117 is 7119890934602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1187956124356 + 876434864761 = 1089934^2 + 936181^2 .

It is a cyclic number.

It is not a de Polignac number, because 2064390989117 - 2² = 2064390989113 is a prime.

It is a super-2 number, since 2×2064390989117² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2064390989113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1032195494558 + 1032195494559.

It is an arithmetic number, because the mean of its divisors is an integer number (1032195494559).

Almost surely, 2^{2064390989117} is an apocalyptic number.

It is an amenable number.

2064390989117 is a deficient number, since it is larger than the sum of its proper divisors (1).

2064390989117 is an equidigital number, since it uses as much as digits as its factorization.

2064390989117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5878656, while the sum is 59.

The spelling of 2064390989117 in words is "two trillion, sixty-four billion, three hundred ninety million, nine hundred eighty-nine thousand, one hundred seventeen".