1663198655073 has 8 divisors (see below), whose sum is σ = 2217909651936. Its totient is φ = 1108643380800.

The previous prime is 1663198655021. The next prime is 1663198655081. The reversal of 1663198655073 is 3705568913661.

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

It is not a de Polignac number, because 1663198655073 - 2¹² = 1663198650977 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1663198654998 and 1663198655016.

It is not an unprimeable number, because it can be changed into a prime (1663198655093) 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, 38905723 + ... + 38948448.

It is an arithmetic number, because the mean of its divisors is an integer number (277238706492).

Almost surely, 2^{1663198655073} is an apocalyptic number.

It is an amenable number.

1663198655073 is a deficient number, since it is larger than the sum of its proper divisors (554710996863).

1663198655073 is an equidigital number, since it uses as much as digits as its factorization.

1663198655073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77861295.

The product of its (nonzero) digits is 24494400, while the sum is 60.

The spelling of 1663198655073 in words is "one trillion, six hundred sixty-three billion, one hundred ninety-eight million, six hundred fifty-five thousand, seventy-three".