144706777638 has 16 divisors (see below), whose sum is σ = 289455179520. Its totient is φ = 48228655176.

The previous prime is 144706777597. The next prime is 144706777643. The reversal of 144706777638 is 836777607441.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1689058 + ... + 1772661.

It is an arithmetic number, because the mean of its divisors is an integer number (18090948720).

Almost surely, 2^144706777638 is an apocalyptic number.

144706777638 is an abundant number, since it is smaller than the sum of its proper divisors (144748401882).

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

144706777638 is a wasteful number, since it uses less digits than its factorization.

144706777638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3468691.

The product of its (nonzero) digits is 33191424, while the sum is 60.

The spelling of 144706777638 in words is "one hundred forty-four billion, seven hundred six million, seven hundred seventy-seven thousand, six hundred thirty-eight".