168368220564 has 24 divisors (see below), whose sum is σ = 392917683648. Its totient is φ = 56114382720.

The previous prime is 168368220563. The next prime is 168368220571. The reversal of 168368220564 is 465022863861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168368220563) 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, 960472 + ... + 1122159.

It is an arithmetic number, because the mean of its divisors is an integer number (16371570152).

Almost surely, 2^168368220564 is an apocalyptic number.

It is an amenable number.

168368220564 is an abundant number, since it is smaller than the sum of its proper divisors (224549463084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

168368220564 is a wasteful number, since it uses less digits than its factorization.

168368220564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2089375 (or 2089373 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 51.

The spelling of 168368220564 in words is "one hundred sixty-eight billion, three hundred sixty-eight million, two hundred twenty thousand, five hundred sixty-four".