135578023469 has 8 divisors (see below), whose sum is σ = 154992633408. Its totient is φ = 116174993760.

The previous prime is 135578023429. The next prime is 135578023507. The reversal of 135578023469 is 964320875531.

It is a happy number.

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

It is not a de Polignac number, because 135578023469 - 2¹² = 135578019373 is a prime.

It is a super-2 number, since 2×135578023469² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 135578023469.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135578023429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2869952 + ... + 2916809.

It is an arithmetic number, because the mean of its divisors is an integer number (19374079176).

It is a 2-persistent number, because it is pandigital, and so is 2⋅135578023469 = 271156046938, but 3⋅135578023469 = 406734070407 is not.

Almost surely, 2^135578023469 is an apocalyptic number.

It is an amenable number.

135578023469 is a deficient number, since it is larger than the sum of its proper divisors (19414609939).

135578023469 is an equidigital number, since it uses as much as digits as its factorization.

135578023469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5790115.

The product of its (nonzero) digits is 5443200, while the sum is 53.

The spelling of 135578023469 in words is "one hundred thirty-five billion, five hundred seventy-eight million, twenty-three thousand, four hundred sixty-nine".