5644642168 has 32 divisors (see below), whose sum is σ = 11561368320. Its totient is φ = 2562300000.

The previous prime is 5644642163. The next prime is 5644642169. The reversal of 5644642168 is 8612464465.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5644642163) 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, 23383 + ... + 108793.

It is an arithmetic number, because the mean of its divisors is an integer number (361292760).

Almost surely, 2^5644642168 is an apocalyptic number.

It is an amenable number.

5644642168 is an abundant number, since it is smaller than the sum of its proper divisors (5916726152).

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

5644642168 is a wasteful number, since it uses less digits than its factorization.

5644642168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86179 (or 86175 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 46.

The square root of 5644642168 is about 75130.8336703380. The cubic root of 5644642168 is about 1780.5143242937.

The spelling of 5644642168 in words is "five billion, six hundred forty-four million, six hundred forty-two thousand, one hundred sixty-eight".