144646344978 has 8 divisors (see below), whose sum is σ = 289292689968. Its totient is φ = 48215448324.

The previous prime is 144646344949. The next prime is 144646344989. The reversal of 144646344978 is 879443646441.

It is a happy number.

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

144646344978 is an admirable number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12053862076 + ... + 12053862087.

It is an arithmetic number, because the mean of its divisors is an integer number (36161586246).

Almost surely, 2^144646344978 is an apocalyptic number.

144646344978 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

144646344978 is a wasteful number, since it uses less digits than its factorization.

144646344978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24107724168.

The product of its digits is 55738368, while the sum is 60.

The spelling of 144646344978 in words is "one hundred forty-four billion, six hundred forty-six million, three hundred forty-four thousand, nine hundred seventy-eight".