18480202408561 has 8 divisors (see below), whose sum is σ = 18710710691904. Its totient is φ = 18249881154960.

The previous prime is 18480202408559. The next prime is 18480202408643. The reversal of 18480202408561 is 16580420208481.

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 18480202408561 - 2¹ = 18480202408559 is a prime.

It is a super-2 number, since 2×18480202408561² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18480202408541) 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, 46558581 + ... + 46953826.

It is an arithmetic number, because the mean of its divisors is an integer number (2338838836488).

Almost surely, 2^{18480202408561} is an apocalyptic number.

It is an amenable number.

18480202408561 is a deficient number, since it is larger than the sum of its proper divisors (230508283343).

18480202408561 is an equidigital number, since it uses as much as digits as its factorization.

18480202408561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93514871.

The product of its (nonzero) digits is 983040, while the sum is 49.

The spelling of 18480202408561 in words is "eighteen trillion, four hundred eighty billion, two hundred two million, four hundred eight thousand, five hundred sixty-one".