135405344645 has 8 divisors (see below), whose sum is σ = 162646820856. Its totient is φ = 108217337536.

The previous prime is 135405344611. The next prime is 135405344681. The reversal of 135405344645 is 546443504531.

It can be written as a sum of positive squares in 4 ways, for example, as 3533232481 + 131872112164 = 59441^2 + 363142^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 135405344645 - 2³⁶ = 66685867909 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 135405344596 and 135405344605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13361702 + ... + 13371831.

It is an arithmetic number, because the mean of its divisors is an integer number (20330852607).

Almost surely, 2^135405344645 is an apocalyptic number.

It is an amenable number.

135405344645 is a deficient number, since it is larger than the sum of its proper divisors (27241476211).

135405344645 is a wasteful number, since it uses less digits than its factorization.

135405344645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26734551.

The product of its (nonzero) digits is 1728000, while the sum is 44.

The spelling of 135405344645 in words is "one hundred thirty-five billion, four hundred five million, three hundred forty-four thousand, six hundred forty-five".