135626715444109 has 2 divisors, whose sum is σ = 135626715444110. Its totient is φ = 135626715444108.

The previous prime is 135626715444053. The next prime is 135626715444119. The reversal of 135626715444109 is 901444517626531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83928501562500 + 51698213881609 = 9161250^2 + 7190147^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135626715444109 is a prime.

It is a super-2 number, since 2×135626715444109² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135626715444119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67813357722054 + 67813357722055.

It is an arithmetic number, because the mean of its divisors is an integer number (67813357722055).

Almost surely, 2^{135626715444109} is an apocalyptic number.

It is an amenable number.

135626715444109 is a deficient number, since it is larger than the sum of its proper divisors (1).

135626715444109 is an equidigital number, since it uses as much as digits as its factorization.

135626715444109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21772800, while the sum is 58.

The spelling of 135626715444109 in words is "one hundred thirty-five trillion, six hundred twenty-six billion, seven hundred fifteen million, four hundred forty-four thousand, one hundred nine".