168464220566 has 16 divisors (see below), whose sum is σ = 262778653440. Its totient is φ = 80901750720.

The previous prime is 168464220539. The next prime is 168464220569. The reversal of 168464220566 is 665022464861.

It is a super-2 number, since 2×168464220566² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168464220569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7592471 + ... + 7614626.

It is an arithmetic number, because the mean of its divisors is an integer number (16423665840).

Almost surely, 2^168464220566 is an apocalyptic number.

168464220566 is a deficient number, since it is larger than the sum of its proper divisors (94314432874).

168464220566 is a wasteful number, since it uses less digits than its factorization.

168464220566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15207319.

The product of its (nonzero) digits is 3317760, while the sum is 50.

The spelling of 168464220566 in words is "one hundred sixty-eight billion, four hundred sixty-four million, two hundred twenty thousand, five hundred sixty-six".