139340944637 has 2 divisors, whose sum is σ = 139340944638. Its totient is φ = 139340944636.

The previous prime is 139340944627. The next prime is 139340944657. The reversal of 139340944637 is 736449043931.

139340944637 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., 96951899641 + 42389044996 = 311371^2 + 205886^2 .

It is a cyclic number.

It is not a de Polignac number, because 139340944637 - 2⁸ = 139340944381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139340944627) 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, 69670472318 + 69670472319.

It is an arithmetic number, because the mean of its divisors is an integer number (69670472319).

Almost surely, 2^139340944637 is an apocalyptic number.

It is an amenable number.

139340944637 is a deficient number, since it is larger than the sum of its proper divisors (1).

139340944637 is an equidigital number, since it uses as much as digits as its factorization.

139340944637 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5878656, while the sum is 53.

The spelling of 139340944637 in words is "one hundred thirty-nine billion, three hundred forty million, nine hundred forty-four thousand, six hundred thirty-seven".