139604126145481 has 2 divisors, whose sum is σ = 139604126145482. Its totient is φ = 139604126145480.

The previous prime is 139604126145431. The next prime is 139604126145619. The reversal of 139604126145481 is 184541621406931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 137783367229456 + 1820758916025 = 11738116^2 + 1349355^2 .

It is a cyclic number.

It is not a de Polignac number, because 139604126145481 - 2²⁷ = 139603991927753 is a prime.

It is a super-2 number, since 2×139604126145481² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (139604126145431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69802063072740 + 69802063072741.

It is an arithmetic number, because the mean of its divisors is an integer number (69802063072741).

Almost surely, 2^{139604126145481} is an apocalyptic number.

It is an amenable number.

139604126145481 is a deficient number, since it is larger than the sum of its proper divisors (1).

139604126145481 is an equidigital number, since it uses as much as digits as its factorization.

139604126145481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4976640, while the sum is 55.

The spelling of 139604126145481 in words is "one hundred thirty-nine trillion, six hundred four billion, one hundred twenty-six million, one hundred forty-five thousand, four hundred eighty-one".