144585939554639 has 32 divisors (see below), whose sum is σ = 162703465478400. Its totient is φ = 127348382165760.

The previous prime is 144585939554629. The next prime is 144585939554659. The reversal of 144585939554639 is 936455939585441.

It is a cyclic number.

It is not a de Polignac number, because 144585939554639 - 2⁸ = 144585939554383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144585939554629) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 73254437 + ... + 75202289.

It is an arithmetic number, because the mean of its divisors is an integer number (5084483296200).

Almost surely, 2^{144585939554639} is an apocalyptic number.

144585939554639 is a deficient number, since it is larger than the sum of its proper divisors (18117525923761).

144585939554639 is a wasteful number, since it uses less digits than its factorization.

144585939554639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1949175.

The product of its digits is 12597120000, while the sum is 80.

The spelling of 144585939554639 in words is "one hundred forty-four trillion, five hundred eighty-five billion, nine hundred thirty-nine million, five hundred fifty-four thousand, six hundred thirty-nine".