13551450044561 has 8 divisors (see below), whose sum is σ = 15920584667904. Its totient is φ = 11371846191120.

The previous prime is 13551450044557. The next prime is 13551450044567. The reversal of 13551450044561 is 16544005415531.

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 13551450044561 - 2² = 13551450044557 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13551450044567) 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, 47382692321 + ... + 47382692606.

It is an arithmetic number, because the mean of its divisors is an integer number (1990073083488).

Almost surely, 2^{13551450044561} is an apocalyptic number.

13551450044561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13551450044561 is a deficient number, since it is larger than the sum of its proper divisors (2369134623343).

13551450044561 is a wasteful number, since it uses less digits than its factorization.

13551450044561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94765384951.

The product of its (nonzero) digits is 720000, while the sum is 44.

The spelling of 13551450044561 in words is "thirteen trillion, five hundred fifty-one billion, four hundred fifty million, forty-four thousand, five hundred sixty-one".