1662641116555 has 64 divisors (see below), whose sum is σ = 2184340193280. Its totient is φ = 1211491814400.

The previous prime is 1662641116501. The next prime is 1662641116561. The reversal of 1662641116555 is 5556111462661.

It is not a de Polignac number, because 1662641116555 - 2⁷ = 1662641116427 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1662641116499 and 1662641116508.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 274043632 + ... + 274049698.

It is an arithmetic number, because the mean of its divisors is an integer number (34130315520).

Almost surely, 2^{1662641116555} is an apocalyptic number.

1662641116555 is a deficient number, since it is larger than the sum of its proper divisors (521699076725).

1662641116555 is a wasteful number, since it uses less digits than its factorization.

1662641116555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7660.

The product of its digits is 1296000, while the sum is 49.

The spelling of 1662641116555 in words is "one trillion, six hundred sixty-two billion, six hundred forty-one million, one hundred sixteen thousand, five hundred fifty-five".