135406034105891 has 6 divisors (see below), whose sum is σ = 139914871871076. Its totient is φ = 131038097520900.

The previous prime is 135406034105879. The next prime is 135406034105899. The reversal of 135406034105891 is 198501430604531.

It is not a de Polignac number, because 135406034105891 - 2⁴² = 131007987594787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135406034105899) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 70450589105 + ... + 70450591026.

It is an arithmetic number, because the mean of its divisors is an integer number (23319145311846).

Almost surely, 2^{135406034105891} is an apocalyptic number.

135406034105891 is a deficient number, since it is larger than the sum of its proper divisors (4508837765185).

135406034105891 is an equidigital number, since it uses as much as digits as its factorization.

135406034105891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140901180193 (or 140901180162 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 50.

The spelling of 135406034105891 in words is "one hundred thirty-five trillion, four hundred six billion, thirty-four million, one hundred five thousand, eight hundred ninety-one".