2051640234289 has 2 divisors, whose sum is σ = 2051640234290. Its totient is φ = 2051640234288.

The previous prime is 2051640234197. The next prime is 2051640234317. The reversal of 2051640234289 is 9824320461502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1852367274289 + 199272960000 = 1361017^2 + 446400^2 .

It is a cyclic number.

It is not a de Polignac number, because 2051640234289 - 2¹¹ = 2051640232241 is a prime.

It is a super-2 number, since 2×2051640234289² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2051640234389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1025820117144 + 1025820117145.

It is an arithmetic number, because the mean of its divisors is an integer number (1025820117145).

Almost surely, 2^{2051640234289} is an apocalyptic number.

It is an amenable number.

2051640234289 is a deficient number, since it is larger than the sum of its proper divisors (1).

2051640234289 is an equidigital number, since it uses as much as digits as its factorization.

2051640234289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 829440, while the sum is 46.

The spelling of 2051640234289 in words is "two trillion, fifty-one billion, six hundred forty million, two hundred thirty-four thousand, two hundred eighty-nine".