135683747386531 has 16 divisors (see below), whose sum is σ = 143903843977600. Its totient is φ = 127572195414528.

The previous prime is 135683747386529. The next prime is 135683747386541.

135683747386531 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 135683747386531 - 2¹ = 135683747386529 is a prime.

It is a super-2 number, since 2×135683747386531² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135683747386541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1761726 + ... + 16567171.

It is an arithmetic number, because the mean of its divisors is an integer number (8993990248600).

Almost surely, 2^{135683747386531} is an apocalyptic number.

135683747386531 is a deficient number, since it is larger than the sum of its proper divisors (8220096591069).

135683747386531 is a wasteful number, since it uses less digits than its factorization.

135683747386531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18331858.

The product of its digits is 914457600, while the sum is 70.

The spelling of 135683747386531 in words is "one hundred thirty-five trillion, six hundred eighty-three billion, seven hundred forty-seven million, three hundred eighty-six thousand, five hundred thirty-one".