1663351013273 has 8 divisors (see below), whose sum is σ = 1665014788800. Its totient is φ = 1661687744848.

The previous prime is 1663351013221. The next prime is 1663351013321. The reversal of 1663351013273 is 3723101533661.

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-1663351013273 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1663351013273.

It is not an unprimeable number, because it can be changed into a prime (1663351010273) 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, 6615188 + ... + 6862026.

It is an arithmetic number, because the mean of its divisors is an integer number (208126848600).

Almost surely, 2^{1663351013273} is an apocalyptic number.

It is an amenable number.

1663351013273 is a deficient number, since it is larger than the sum of its proper divisors (1663775527).

1663351013273 is a wasteful number, since it uses less digits than its factorization.

1663351013273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253551.

The product of its (nonzero) digits is 204120, while the sum is 41.

The spelling of 1663351013273 in words is "one trillion, six hundred sixty-three billion, three hundred fifty-one million, thirteen thousand, two hundred seventy-three".