135440087087 has 2 divisors, whose sum is σ = 135440087088. Its totient is φ = 135440087086.

The previous prime is 135440087009. The next prime is 135440087089. The reversal of 135440087087 is 780780044531.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 135440087087 - 2¹⁰ = 135440086063 is a prime.

It is a super-5 number, since 5×135440087087⁵ (a number of 57 digits) contains 55555 as substring.

Together with 135440087089, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135440087089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67720043543 + 67720043544.

It is an arithmetic number, because the mean of its divisors is an integer number (67720043544).

Almost surely, 2^135440087087 is an apocalyptic number.

135440087087 is a deficient number, since it is larger than the sum of its proper divisors (1).

135440087087 is an equidigital number, since it uses as much as digits as its factorization.

135440087087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 752640, while the sum is 47.

The spelling of 135440087087 in words is "one hundred thirty-five billion, four hundred forty million, eighty-seven thousand, eighty-seven".