140664344437 has 2 divisors, whose sum is σ = 140664344438. Its totient is φ = 140664344436.

The previous prime is 140664344423. The next prime is 140664344453. The reversal of 140664344437 is 734443466041.

140664344437 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120565895076 + 20098449361 = 347226^2 + 141769^2 .

It is a cyclic number.

It is not a de Polignac number, because 140664344437 - 2³⁵ = 106304606069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140664344477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70332172218 + 70332172219.

It is an arithmetic number, because the mean of its divisors is an integer number (70332172219).

Almost surely, 2^140664344437 is an apocalyptic number.

It is an amenable number.

140664344437 is a deficient number, since it is larger than the sum of its proper divisors (1).

140664344437 is an equidigital number, since it uses as much as digits as its factorization.

140664344437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2322432, while the sum is 46.

The spelling of 140664344437 in words is "one hundred forty billion, six hundred sixty-four million, three hundred forty-four thousand, four hundred thirty-seven".