1663632404455 has 32 divisors (see below), whose sum is σ = 2338550590464. Its totient is φ = 1112367223296.

The previous prime is 1663632404429. The next prime is 1663632404459. The reversal of 1663632404455 is 5544042363661.

It is not a de Polignac number, because 1663632404455 - 2⁷ = 1663632404327 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1663632404399 and 1663632404408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1663632404459) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39579 + ... + 1824508.

It is an arithmetic number, because the mean of its divisors is an integer number (73079705952).

Almost surely, 2^{1663632404455} is an apocalyptic number.

1663632404455 is a deficient number, since it is larger than the sum of its proper divisors (674918186009).

1663632404455 is a wasteful number, since it uses less digits than its factorization.

1663632404455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1864735.

The product of its (nonzero) digits is 6220800, while the sum is 49.

The spelling of 1663632404455 in words is "one trillion, six hundred sixty-three billion, six hundred thirty-two million, four hundred four thousand, four hundred fifty-five".