135678023468 has 24 divisors (see below), whose sum is σ = 270742120992. Its totient is φ = 58937059584.

The previous prime is 135678023401. The next prime is 135678023491. The reversal of 135678023468 is 864320876531.

It is a happy 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, 76740080 + ... + 76741847.

It is an arithmetic number, because the mean of its divisors is an integer number (11280921708).

Almost surely, 2^135678023468 is an apocalyptic number.

It is an amenable number.

135678023468 is a deficient number, since it is larger than the sum of its proper divisors (135064097524).

135678023468 is a wasteful number, since it uses less digits than its factorization.

135678023468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153481961 (or 153481959 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 53.

Adding to 135678023468 its reverse (864320876531), we get a palindrome (999998899999).

The spelling of 135678023468 in words is "one hundred thirty-five billion, six hundred seventy-eight million, twenty-three thousand, four hundred sixty-eight".