140038338299809 has 2 divisors, whose sum is σ = 140038338299810. Its totient is φ = 140038338299808.

The previous prime is 140038338299789. The next prime is 140038338299911. The reversal of 140038338299809 is 908992833830041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 137910614296225 + 2127724003584 = 11743535^2 + 1458672^2 .

It is a cyclic number.

It is not a de Polignac number, because 140038338299809 - 2¹⁷ = 140038338168737 is a prime.

It is a super-2 number, since 2×140038338299809² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (140038338299609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70019169149904 + 70019169149905.

It is an arithmetic number, because the mean of its divisors is an integer number (70019169149905).

Almost surely, 2^{140038338299809} is an apocalyptic number.

It is an amenable number.

140038338299809 is a deficient number, since it is larger than the sum of its proper divisors (1).

140038338299809 is an equidigital number, since it uses as much as digits as its factorization.

140038338299809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80621568, while the sum is 67.

The spelling of 140038338299809 in words is "one hundred forty trillion, thirty-eight billion, three hundred thirty-eight million, two hundred ninety-nine thousand, eight hundred nine".