561766667165 has 32 divisors (see below), whose sum is σ = 773656790400. Its totient is φ = 387783397120.

The previous prime is 561766667141. The next prime is 561766667197.

561766667165 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 561766667165 - 2²⁴ = 561749889949 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 561766667098 and 561766667107.

It is a congruent number.

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, 2890682 + ... + 3078891.

It is an arithmetic number, because the mean of its divisors is an integer number (24176774700).

Almost surely, 2^561766667165 is an apocalyptic number.

561766667165 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

561766667165 is a deficient number, since it is larger than the sum of its proper divisors (211890123235).

561766667165 is a wasteful number, since it uses less digits than its factorization.

561766667165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5969677.

The product of its digits is 57153600, while the sum is 62.

The spelling of 561766667165 in words is "five hundred sixty-one billion, seven hundred sixty-six million, six hundred sixty-seven thousand, one hundred sixty-five".