561764467165 has 16 divisors (see below), whose sum is σ = 735936471936. Its totient is φ = 408258356800.

The previous prime is 561764467163. The next prime is 561764467171.

It is a happy number.

561764467165 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 561764467165 - 2¹ = 561764467163 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561764467163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3644041 + ... + 3795070.

It is an arithmetic number, because the mean of its divisors is an integer number (45996029496).

Almost surely, 2^561764467165 is an apocalyptic number.

561764467165 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

561764467165 is a deficient number, since it is larger than the sum of its proper divisors (174172004771).

561764467165 is a wasteful number, since it uses less digits than its factorization.

561764467165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7440500.

The product of its digits is 25401600, while the sum is 58.

The spelling of 561764467165 in words is "five hundred sixty-one billion, seven hundred sixty-four million, four hundred sixty-seven thousand, one hundred sixty-five".