13557577809 has 16 divisors (see below), whose sum is σ = 19277818560. Its totient is φ = 8445511680.

The previous prime is 13557577751. The next prime is 13557577819. The reversal of 13557577809 is 90877575531.

It is not a de Polignac number, because 13557577809 - 2⁷ = 13557577681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13557577819) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 949152 + ... + 963329.

It is an arithmetic number, because the mean of its divisors is an integer number (1204863660).

Almost surely, 2^13557577809 is an apocalyptic number.

It is an amenable number.

13557577809 is a deficient number, since it is larger than the sum of its proper divisors (5720240751).

13557577809 is a wasteful number, since it uses less digits than its factorization.

13557577809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1912640.

The product of its (nonzero) digits is 9261000, while the sum is 57.

The spelling of 13557577809 in words is "thirteen billion, five hundred fifty-seven million, five hundred seventy-seven thousand, eight hundred nine".