139604126145431 has 2 divisors, whose sum is σ = 139604126145432. Its totient is φ = 139604126145430.

The previous prime is 139604126145413. The next prime is 139604126145481. The reversal of 139604126145431 is 134541621406931.

Together with previous prime (139604126145413) it forms an Ormiston pair, because they use the same digits, order apart.

It is an a-pointer prime, because the next prime (139604126145481) can be obtained adding 139604126145431 to its sum of digits (50).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 139604126145431 - 2³⁸ = 139329248238487 is a prime.

It is a super-2 number, since 2×139604126145431² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 139604126145431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139604126145481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69802063072715 + 69802063072716.

It is an arithmetic number, because the mean of its divisors is an integer number (69802063072716).

Almost surely, 2^{139604126145431} is an apocalyptic number.

139604126145431 is a deficient number, since it is larger than the sum of its proper divisors (1).

139604126145431 is an equidigital number, since it uses as much as digits as its factorization.

139604126145431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1866240, while the sum is 50.

The spelling of 139604126145431 in words is "one hundred thirty-nine trillion, six hundred four billion, one hundred twenty-six million, one hundred forty-five thousand, four hundred thirty-one".