1061606005566 has 32 divisors (see below), whose sum is σ = 2160043296768. Its totient is φ = 347774765760.

The previous prime is 1061606005561. The next prime is 1061606005609. The reversal of 1061606005566 is 6655006061601.

It is a super-2 number, since 2×1061606005566² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1061606005561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5485351 + ... + 5675586.

It is an arithmetic number, because the mean of its divisors is an integer number (67501353024).

Almost surely, 2^{1061606005566} is an apocalyptic number.

1061606005566 is an abundant number, since it is smaller than the sum of its proper divisors (1098437291202).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1061606005566 is a wasteful number, since it uses less digits than its factorization.

1061606005566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11161216.

The product of its (nonzero) digits is 194400, while the sum is 42.

The spelling of 1061606005566 in words is "one trillion, sixty-one billion, six hundred six million, five thousand, five hundred sixty-six".