239702355529649 has 2 divisors, whose sum is σ = 239702355529650. Its totient is φ = 239702355529648.

The previous prime is 239702355529561. The next prime is 239702355529657. The reversal of 239702355529649 is 946925553207932.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 213991695687025 + 25710659842624 = 14628455^2 + 5070568^2 .

It is a cyclic number.

It is not a de Polignac number, because 239702355529649 - 2³² = 239698060562353 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (239702355529669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119851177764824 + 119851177764825.

It is an arithmetic number, because the mean of its divisors is an integer number (119851177764825).

Almost surely, 2^{239702355529649} is an apocalyptic number.

It is an amenable number.

239702355529649 is a deficient number, since it is larger than the sum of its proper divisors (1).

239702355529649 is an equidigital number, since it uses as much as digits as its factorization.

239702355529649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1102248000, while the sum is 71.

The spelling of 239702355529649 in words is "two hundred thirty-nine trillion, seven hundred two billion, three hundred fifty-five million, five hundred twenty-nine thousand, six hundred forty-nine".