140660668097 has 2 divisors, whose sum is σ = 140660668098. Its totient is φ = 140660668096.

The previous prime is 140660668079. The next prime is 140660668171. The reversal of 140660668097 is 790866066041.

Together with previous prime (140660668079) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 139066343056 + 1594325041 = 372916^2 + 39929^2 .

It is a cyclic number.

It is not a de Polignac number, because 140660668097 - 2¹⁰ = 140660667073 is a prime.

It is not a weakly prime, because it can be changed into another prime (140660668067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70330334048 + 70330334049.

It is an arithmetic number, because the mean of its divisors is an integer number (70330334049).

Almost surely, 2^140660668097 is an apocalyptic number.

It is an amenable number.

140660668097 is a deficient number, since it is larger than the sum of its proper divisors (1).

140660668097 is an equidigital number, since it uses as much as digits as its factorization.

140660668097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2612736, while the sum is 53.

The spelling of 140660668097 in words is "one hundred forty billion, six hundred sixty million, six hundred sixty-eight thousand, ninety-seven".