135440544415531 has 4 divisors (see below), whose sum is σ = 135462563694064. Its totient is φ = 135418525137000.

The previous prime is 135440544415523. The next prime is 135440544415613. The reversal of 135440544415531 is 135514445044531.

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 135440544415531 - 2³ = 135440544415523 is a prime.

It is a super-2 number, since 2×135440544415531² (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 (135440545415531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11009630040 + ... + 11009642341.

It is an arithmetic number, because the mean of its divisors is an integer number (33865640923516).

Almost surely, 2^{135440544415531} is an apocalyptic number.

135440544415531 is a deficient number, since it is larger than the sum of its proper divisors (22019278533).

135440544415531 is an equidigital number, since it uses as much as digits as its factorization.

135440544415531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22019278532.

The product of its (nonzero) digits is 5760000, while the sum is 49.

The spelling of 135440544415531 in words is "one hundred thirty-five trillion, four hundred forty billion, five hundred forty-four million, four hundred fifteen thousand, five hundred thirty-one".