135185340881801 has 16 divisors (see below), whose sum is σ = 154613061792000. Its totient is φ = 115786524372288.

The previous prime is 135185340881779. The next prime is 135185340881809. The reversal of 135185340881801 is 108188043581531.

It is a de Polignac number, because none of the positive numbers 2^k-135185340881801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135185340881809) 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, 72932300 + ... + 74762898.

It is an arithmetic number, because the mean of its divisors is an integer number (9663316362000).

Almost surely, 2^{135185340881801} is an apocalyptic number.

It is an amenable number.

135185340881801 is a deficient number, since it is larger than the sum of its proper divisors (19427720910199).

135185340881801 is a wasteful number, since it uses less digits than its factorization.

135185340881801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1838488.

The product of its (nonzero) digits is 3686400, while the sum is 56.

The spelling of 135185340881801 in words is "one hundred thirty-five trillion, one hundred eighty-five billion, three hundred forty million, eight hundred eighty-one thousand, eight hundred one".