1006620065555 has 8 divisors (see below), whose sum is σ = 1300862854032. Its totient is φ = 743350202208.

The previous prime is 1006620065519. The next prime is 1006620065573. The reversal of 1006620065555 is 5555600266001.

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

It is a cyclic number.

It is not a de Polignac number, because 1006620065555 - 2⁶ = 1006620065491 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7743231209 + ... + 7743231338.

It is an arithmetic number, because the mean of its divisors is an integer number (162607856754).

Almost surely, 2^{1006620065555} is an apocalyptic number.

1006620065555 is a deficient number, since it is larger than the sum of its proper divisors (294242788477).

1006620065555 is a wasteful number, since it uses less digits than its factorization.

1006620065555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15486462565.

The product of its (nonzero) digits is 270000, while the sum is 41.

The spelling of 1006620065555 in words is "one trillion, six billion, six hundred twenty million, sixty-five thousand, five hundred fifty-five".