135440087039 has 4 divisors (see below), whose sum is σ = 135510228840. Its totient is φ = 135369945240.

The previous prime is 135440087009. The next prime is 135440087087. The reversal of 135440087039 is 930780044531.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 135440087039 - 2¹⁶ = 135440021503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135440087009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35068004 + ... + 35071865.

It is an arithmetic number, because the mean of its divisors is an integer number (33877557210).

Almost surely, 2^135440087039 is an apocalyptic number.

135440087039 is a deficient number, since it is larger than the sum of its proper divisors (70141801).

135440087039 is an equidigital number, since it uses as much as digits as its factorization.

135440087039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70141800.

The product of its (nonzero) digits is 362880, while the sum is 44.

The spelling of 135440087039 in words is "one hundred thirty-five billion, four hundred forty million, eighty-seven thousand, thirty-nine".