1006605551611 has 4 divisors (see below), whose sum is σ = 1098115147224. Its totient is φ = 915095956000.

The previous prime is 1006605551591. The next prime is 1006605551663. The reversal of 1006605551611 is 1161555066001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1006605551611 - 2⁵ = 1006605551579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1006605551671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45754797790 + ... + 45754797811.

It is an arithmetic number, because the mean of its divisors is an integer number (274528786806).

Almost surely, 2^{1006605551611} is an apocalyptic number.

1006605551611 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1006605551611 is a deficient number, since it is larger than the sum of its proper divisors (91509595613).

1006605551611 is an equidigital number, since it uses as much as digits as its factorization.

1006605551611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91509595612.

The product of its (nonzero) digits is 27000, while the sum is 37.

The spelling of 1006605551611 in words is "one trillion, six billion, six hundred five million, five hundred fifty-one thousand, six hundred eleven".