135911604423 has 8 divisors (see below), whose sum is σ = 207103397248. Its totient is φ = 77663773944.

The previous prime is 135911604397. The next prime is 135911604427. The reversal of 135911604423 is 324406119531.

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

It is not a de Polignac number, because 135911604423 - 2⁵ = 135911604391 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 (135911604427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3235990561 + ... + 3235990602.

It is an arithmetic number, because the mean of its divisors is an integer number (25887924656).

Almost surely, 2^135911604423 is an apocalyptic number.

135911604423 is a deficient number, since it is larger than the sum of its proper divisors (71191792825).

135911604423 is an equidigital number, since it uses as much as digits as its factorization.

135911604423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6471981173.

The product of its (nonzero) digits is 77760, while the sum is 39.

The spelling of 135911604423 in words is "one hundred thirty-five billion, nine hundred eleven million, six hundred four thousand, four hundred twenty-three".