140244397673 has 2 divisors, whose sum is σ = 140244397674. Its totient is φ = 140244397672.

The previous prime is 140244397649. The next prime is 140244397681. The reversal of 140244397673 is 376793442041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77457569344 + 62786828329 = 278312^2 + 250573^2 .

It is a cyclic number.

It is not a de Polignac number, because 140244397673 - 2¹⁴ = 140244381289 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 (140244397613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70122198836 + 70122198837.

It is an arithmetic number, because the mean of its divisors is an integer number (70122198837).

Almost surely, 2^140244397673 is an apocalyptic number.

It is an amenable number.

140244397673 is a deficient number, since it is larger than the sum of its proper divisors (1).

140244397673 is an equidigital number, since it uses as much as digits as its factorization.

140244397673 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3048192, while the sum is 50.

The spelling of 140244397673 in words is "one hundred forty billion, two hundred forty-four million, three hundred ninety-seven thousand, six hundred seventy-three".