144147891278 has 16 divisors (see below), whose sum is σ = 219461892480. Its totient is φ = 71001453816.

The previous prime is 144147891269. The next prime is 144147891281. The reversal of 144147891278 is 872198741441.

It is a happy number.

It is a super-2 number, since 2×144147891278² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1843226 + ... + 1919837.

It is an arithmetic number, because the mean of its divisors is an integer number (13716368280).

Almost surely, 2^144147891278 is an apocalyptic number.

144147891278 is a deficient number, since it is larger than the sum of its proper divisors (75314001202).

144147891278 is a wasteful number, since it uses less digits than its factorization.

144147891278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3763351.

The product of its digits is 3612672, while the sum is 56.

The spelling of 144147891278 in words is "one hundred forty-four billion, one hundred forty-seven million, eight hundred ninety-one thousand, two hundred seventy-eight".