135678023469 has 12 divisors (see below), whose sum is σ = 196006653856. Its totient is φ = 90439421832.

The previous prime is 135678023401. The next prime is 135678023491. The reversal of 135678023469 is 964320876531.

135678023469 is a `hidden beast` number, since 13 + 567 + 8 + 0 + 2 + 3 + 4 + 69 = 666.

It is not a de Polignac number, because 135678023469 - 2⁹ = 135678022957 is a prime.

It is a super-2 number, since 2×135678023469² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135678023269) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 981019 + ... + 1110744.

It is a 2-persistent number, because it is pandigital, and so is 2⋅135678023469 = 271356046938, but 3⋅135678023469 = 407034070407 is not.

Almost surely, 2^135678023469 is an apocalyptic number.

It is an amenable number.

135678023469 is a deficient number, since it is larger than the sum of its proper divisors (60328630387).

135678023469 is a wasteful number, since it uses less digits than its factorization.

135678023469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2098976 (or 2098973 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 54.

The spelling of 135678023469 in words is "one hundred thirty-five billion, six hundred seventy-eight million, twenty-three thousand, four hundred sixty-nine".