135578005123 has 8 divisors (see below), whose sum is σ = 147908021760. Its totient is φ = 123248779080.

The previous prime is 135578005097. The next prime is 135578005127. The reversal of 135578005123 is 321500875531.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135578005123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135578005127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194818 + ... + 555976.

It is an arithmetic number, because the mean of its divisors is an integer number (18488502720).

Almost surely, 2^135578005123 is an apocalyptic number.

135578005123 is a deficient number, since it is larger than the sum of its proper divisors (12330016637).

135578005123 is a wasteful number, since it uses less digits than its factorization.

135578005123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395297.

The product of its (nonzero) digits is 126000, while the sum is 40.

The spelling of 135578005123 in words is "one hundred thirty-five billion, five hundred seventy-eight million, five thousand, one hundred twenty-three".