13552749009 has 10 divisors (see below), whose sum is σ = 20245464690. Its totient is φ = 9035165952.

The previous prime is 13552748983. The next prime is 13552749047. The reversal of 13552749009 is 90094725531.

It is a happy number.

13552749009 is a `hidden beast` number, since 1 + 3 + 552 + 7 + 4 + 90 + 0 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 12666377025 + 886371984 = 112545^2 + 29772^2 .

It is not a de Polignac number, because 13552749009 - 2⁵ = 13552748977 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13552741009) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 83658864 + ... + 83659025.

It is an arithmetic number, because the mean of its divisors is an integer number (2024546469).

Almost surely, 2^13552749009 is an apocalyptic number.

It is an amenable number.

13552749009 is a deficient number, since it is larger than the sum of its proper divisors (6692715681).

13552749009 is an equidigital number, since it uses as much as digits as its factorization.

13552749009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167317901 (or 167317892 counting only the distinct ones).

The product of its (nonzero) digits is 340200, while the sum is 45.

The spelling of 13552749009 in words is "thirteen billion, five hundred fifty-two million, seven hundred forty-nine thousand, nine".