1061166505 has 32 divisors (see below), whose sum is σ = 1470873600. Its totient is φ = 719928000.

The previous prime is 1061166493. The next prime is 1061166539. The reversal of 1061166505 is 5056611601.

1061166505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1061166505 - 2⁷ = 1061166377 is a prime.

It is a super-2 number, since 2×1061166505² = 2252148702667830050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1747912 + ... + 1748518.

It is an arithmetic number, because the mean of its divisors is an integer number (45964800).

Almost surely, 2^1061166505 is an apocalyptic number.

It is an amenable number.

1061166505 is a deficient number, since it is larger than the sum of its proper divisors (409707095).

1061166505 is a wasteful number, since it uses less digits than its factorization.

1061166505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1069.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 1061166505 is about 32575.5507244314. The cubic root of 1061166505 is about 1019.9867052605.

It can be divided in two parts, 106 and 1166505, that added together give a palindrome (1166611).

The spelling of 1061166505 in words is "one billion, sixty-one million, one hundred sixty-six thousand, five hundred five".