8561383401409 has 16 divisors (see below), whose sum is σ = 8756207163648. Its totient is φ = 8367090844672.

The previous prime is 8561383401401. The next prime is 8561383401419. The reversal of 8561383401409 is 9041043831658.

It is a cyclic number.

It is not a de Polignac number, because 8561383401409 - 2³ = 8561383401401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8561383401401) 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, 304694049 + ... + 304722145.

It is an arithmetic number, because the mean of its divisors is an integer number (547262947728).

Almost surely, 2^{8561383401409} is an apocalyptic number.

It is an amenable number.

8561383401409 is a deficient number, since it is larger than the sum of its proper divisors (194823762239).

8561383401409 is a wasteful number, since it uses less digits than its factorization.

8561383401409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37304.

The product of its (nonzero) digits is 2488320, while the sum is 52.

The spelling of 8561383401409 in words is "eight trillion, five hundred sixty-one billion, three hundred eighty-three million, four hundred one thousand, four hundred nine".