144439738973 has 16 divisors (see below), whose sum is σ = 154818902016. Its totient is φ = 134403413760.

The previous prime is 144439738969. The next prime is 144439738979. The reversal of 144439738973 is 379837934441.

It is a cyclic number.

It is not a de Polignac number, because 144439738973 - 2² = 144439738969 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144439738979) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7439108 + ... + 7458498.

It is an arithmetic number, because the mean of its divisors is an integer number (9676181376).

Almost surely, 2^144439738973 is an apocalyptic number.

It is an amenable number.

144439738973 is a deficient number, since it is larger than the sum of its proper divisors (10379163043).

144439738973 is a wasteful number, since it uses less digits than its factorization.

144439738973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28204.

The product of its digits is 54867456, while the sum is 62.

The spelling of 144439738973 in words is "one hundred forty-four billion, four hundred thirty-nine million, seven hundred thirty-eight thousand, nine hundred seventy-three".