135579024469 has 4 divisors (see below), whose sum is σ = 154947456544. Its totient is φ = 116210592396.

The previous prime is 135579024433. The next prime is 135579024491. The reversal of 135579024469 is 964420975531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 135579024469 - 2¹⁷ = 135578893397 is a prime.

It is a super-2 number, since 2×135579024469² (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 (135579024419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9684216027 + ... + 9684216040.

It is an arithmetic number, because the mean of its divisors is an integer number (38736864136).

Almost surely, 2^135579024469 is an apocalyptic number.

It is an amenable number.

135579024469 is a deficient number, since it is larger than the sum of its proper divisors (19368432075).

135579024469 is an equidigital number, since it uses as much as digits as its factorization.

135579024469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19368432074.

The product of its (nonzero) digits is 8164800, while the sum is 55.

The spelling of 135579024469 in words is "one hundred thirty-five billion, five hundred seventy-nine million, twenty-four thousand, four hundred sixty-nine".