135680224469 has 8 divisors (see below), whose sum is σ = 136058454840. Its totient is φ = 135302072256.

The previous prime is 135680224457. The next prime is 135680224501. The reversal of 135680224469 is 964422086531.

It can be written as a sum of positive squares in 4 ways, for example, as 3686068369 + 131994156100 = 60713^2 + 363310^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 135680224469 - 2²⁰ = 135679175893 is a prime.

It is a super-2 number, since 2×135680224469² (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 (135680224969) 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, 5982419 + ... + 6005055.

It is an arithmetic number, because the mean of its divisors is an integer number (17007306855).

Almost surely, 2^135680224469 is an apocalyptic number.

It is an amenable number.

135680224469 is a deficient number, since it is larger than the sum of its proper divisors (378230371).

135680224469 is a wasteful number, since it uses less digits than its factorization.

135680224469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39079.

The product of its (nonzero) digits is 2488320, while the sum is 50.

The spelling of 135680224469 in words is "one hundred thirty-five billion, six hundred eighty million, two hundred twenty-four thousand, four hundred sixty-nine".