144945217438 has 12 divisors (see below), whose sum is σ = 252914614272. Its totient is φ = 62119378860.

The previous prime is 144945217421. The next prime is 144945217451. The reversal of 144945217438 is 834712549441.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 739516318 + ... + 739516513.

It is an arithmetic number, because the mean of its divisors is an integer number (21076217856).

Almost surely, 2^144945217438 is an apocalyptic number.

144945217438 is a deficient number, since it is larger than the sum of its proper divisors (107969396834).

144945217438 is a wasteful number, since it uses less digits than its factorization.

144945217438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1479032847 (or 1479032840 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 52.

The spelling of 144945217438 in words is "one hundred forty-four billion, nine hundred forty-five million, two hundred seventeen thousand, four hundred thirty-eight".