1663068506449 has 24 divisors (see below), whose sum is σ = 1943074718208. Its totient is φ = 1419246037440.

The previous prime is 1663068506413. The next prime is 1663068506503. The reversal of 1663068506449 is 9446058603661.

It is a happy number.

It is not a de Polignac number, because 1663068506449 - 2⁹ = 1663068505937 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1663068506393 and 1663068506402.

It is not an unprimeable number, because it can be changed into a prime (1663068506149) 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 23 ways as a sum of consecutive naturals, for example, 13088029 + ... + 13214485.

It is an arithmetic number, because the mean of its divisors is an integer number (80961446592).

Almost surely, 2^{1663068506449} is an apocalyptic number.

It is an amenable number.

1663068506449 is a deficient number, since it is larger than the sum of its proper divisors (280006211759).

1663068506449 is a wasteful number, since it uses less digits than its factorization.

1663068506449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127645 (or 127638 counting only the distinct ones).

The product of its (nonzero) digits is 22394880, while the sum is 58.

The spelling of 1663068506449 in words is "one trillion, six hundred sixty-three billion, sixty-eight million, five hundred six thousand, four hundred forty-nine".