1663410143661 has 48 divisors (see below), whose sum is σ = 2676728609280. Its totient is φ = 915188319360.

The previous prime is 1663410143627. The next prime is 1663410143669.

1663410143661 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1663410143661 - 2¹⁰ = 1663410142637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1663410143669) 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 47 ways as a sum of consecutive naturals, for example, 28726 + ... + 1824183.

It is an arithmetic number, because the mean of its divisors is an integer number (55765179360).

Almost surely, 2^{1663410143661} is an apocalyptic number.

It is an amenable number.

1663410143661 is a deficient number, since it is larger than the sum of its proper divisors (1013318465619).

1663410143661 is a wasteful number, since it uses less digits than its factorization.

1663410143661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1853154 (or 1853147 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 42.

The spelling of 1663410143661 in words is "one trillion, six hundred sixty-three billion, four hundred ten million, one hundred forty-three thousand, six hundred sixty-one".