1106606551561 has 32 divisors (see below), whose sum is σ = 1366078314240. Its totient is φ = 874886178816.

The previous prime is 1106606551529. The next prime is 1106606551579. The reversal of 1106606551561 is 1651556066011.

It is a cyclic number.

It is not a de Polignac number, because 1106606551561 - 2⁵ = 1106606551529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1106606551961) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 958170 + ... + 1769548.

It is an arithmetic number, because the mean of its divisors is an integer number (42689947320).

Almost surely, 2^{1106606551561} is an apocalyptic number.

It is an amenable number.

1106606551561 is a deficient number, since it is larger than the sum of its proper divisors (259471762679).

1106606551561 is a wasteful number, since it uses less digits than its factorization.

1106606551561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 811633.

The product of its (nonzero) digits is 162000, while the sum is 43.

The spelling of 1106606551561 in words is "one trillion, one hundred six billion, six hundred six million, five hundred fifty-one thousand, five hundred sixty-one".