144643473946 has 8 divisors (see below), whose sum is σ = 216970657344. Its totient is φ = 72319921500.

The previous prime is 144643473941. The next prime is 144643473977. The reversal of 144643473946 is 649374346441.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (144643473941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 805860 + ... + 968863.

It is an arithmetic number, because the mean of its divisors is an integer number (27121332168).

Almost surely, 2^144643473946 is an apocalyptic number.

144643473946 is a deficient number, since it is larger than the sum of its proper divisors (72327183398).

144643473946 is a wasteful number, since it uses less digits than its factorization.

144643473946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1815476.

The product of its digits is 20901888, while the sum is 55.

The spelling of 144643473946 in words is "one hundred forty-four billion, six hundred forty-three million, four hundred seventy-three thousand, nine hundred forty-six".