135917126709 has 64 divisors (see below), whose sum is σ = 229281206784. Its totient is φ = 69691124736.

The previous prime is 135917126651. The next prime is 135917126729. The reversal of 135917126709 is 907621719531.

It is not a de Polignac number, because 135917126709 - 2¹² = 135917122613 is a prime.

It is a super-2 number, since 2×135917126709² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135917126729) 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 in 63 ways as a sum of consecutive naturals, for example, 12246967 + ... + 12258059.

It is an arithmetic number, because the mean of its divisors is an integer number (3582518856).

Almost surely, 2^135917126709 is an apocalyptic number.

It is an amenable number.

135917126709 is a deficient number, since it is larger than the sum of its proper divisors (93364080075).

135917126709 is a wasteful number, since it uses less digits than its factorization.

135917126709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12366.

The product of its (nonzero) digits is 714420, while the sum is 51.

The spelling of 135917126709 in words is "one hundred thirty-five billion, nine hundred seventeen million, one hundred twenty-six thousand, seven hundred nine".