1999965992293 has 2 divisors, whose sum is σ = 1999965992294. Its totient is φ = 1999965992292.

The previous prime is 1999965992203. The next prime is 1999965992303. The reversal of 1999965992293 is 3922995699991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1683264923649 + 316701068644 = 1297407^2 + 562762^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1999965992293 is a prime.

It is a super-3 number, since 3×1999965992293³ (a number of 38 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1999965992203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 999982996146 + 999982996147.

It is an arithmetic number, because the mean of its divisors is an integer number (999982996147).

Almost surely, 2^{1999965992293} is an apocalyptic number.

It is an amenable number.

1999965992293 is a deficient number, since it is larger than the sum of its proper divisors (1).

1999965992293 is an equidigital number, since it uses as much as digits as its factorization.

1999965992293 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1721868840, while the sum is 82.

The spelling of 1999965992293 in words is "one trillion, nine hundred ninety-nine billion, nine hundred sixty-five million, nine hundred ninety-two thousand, two hundred ninety-three".