644002160199 has 8 divisors (see below), whose sum is σ = 858938650752. Its totient is φ = 429200221560.

The previous prime is 644002160173. The next prime is 644002160213. The reversal of 644002160199 is 991061200446.

644002160199 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 644002160199 - 2⁸ = 644002159943 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 644002160199.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (644002160299) 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, 33626809 + ... + 33645954.

It is an arithmetic number, because the mean of its divisors is an integer number (107367331344).

Almost surely, 2^644002160199 is an apocalyptic number.

644002160199 is a deficient number, since it is larger than the sum of its proper divisors (214936490553).

644002160199 is a wasteful number, since it uses less digits than its factorization.

644002160199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67275957.

The product of its (nonzero) digits is 93312, while the sum is 42.

The spelling of 644002160199 in words is "six hundred forty-four billion, two million, one hundred sixty thousand, one hundred ninety-nine".