18228305561653 has 8 divisors (see below), whose sum is σ = 19885602703680. Its totient is φ = 16571038162080.

The previous prime is 18228305561581. The next prime is 18228305561681. The reversal of 18228305561653 is 35616550382281.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18228305561653 is a prime.

It is a super-2 number, since 2×18228305561653² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18228305561594 and 18228305561603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18228305567653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6144400 + ... + 8614537.

It is an arithmetic number, because the mean of its divisors is an integer number (2485700337960).

Almost surely, 2^{18228305561653} is an apocalyptic number.

It is an amenable number.

18228305561653 is a deficient number, since it is larger than the sum of its proper divisors (1657297142027).

18228305561653 is a wasteful number, since it uses less digits than its factorization.

18228305561653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14871227.

The product of its (nonzero) digits is 10368000, while the sum is 55.

The spelling of 18228305561653 in words is "eighteen trillion, two hundred twenty-eight billion, three hundred five million, five hundred sixty-one thousand, six hundred fifty-three".