168575484575861 has 10 divisors (see below), whose sum is σ = 185431881656310. Its totient is φ = 153250440510200.

The previous prime is 168575484575809. The next prime is 168575484575863.

It is a happy number.

168575484575861 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 152130886198225 + 16444598377636 = 12334135^2 + 4055194^2 .

It is a de Polignac number, because none of the positive numbers 2^k-168575484575861 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 (168575484575863) 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 9 ways as a sum of consecutive naturals, for example, 5756951570 + ... + 5756980851.

It is an arithmetic number, because the mean of its divisors is an integer number (18543188165631).

Almost surely, 2^{168575484575861} is an apocalyptic number.

168575484575861 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

168575484575861 is a deficient number, since it is larger than the sum of its proper divisors (16856397080449).

168575484575861 is an frugal number, since it uses more digits than its factorization.

168575484575861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11513932465 (or 11513932432 counting only the distinct ones).

The product of its digits is 9031680000, while the sum is 80.

The spelling of 168575484575861 in words is "one hundred sixty-eight trillion, five hundred seventy-five billion, four hundred eighty-four million, five hundred seventy-five thousand, eight hundred sixty-one".