1444939728278 has 8 divisors (see below), whose sum is σ = 2213524690272. Its totient is φ = 707098164856.

The previous prime is 1444939728257. The next prime is 1444939728299. The reversal of 1444939728278 is 8728279394441.

It is an interprime number because it is at equal distance from previous prime (1444939728257) and next prime (1444939728299).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1444939728278² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7685849525 + ... + 7685849712.

It is an arithmetic number, because the mean of its divisors is an integer number (276690586284).

Almost surely, 2^{1444939728278} is an apocalyptic number.

1444939728278 is a deficient number, since it is larger than the sum of its proper divisors (768584961994).

1444939728278 is a wasteful number, since it uses less digits than its factorization.

1444939728278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15371699286.

The product of its digits is 195084288, while the sum is 68.

The spelling of 1444939728278 in words is "one trillion, four hundred forty-four billion, nine hundred thirty-nine million, seven hundred twenty-eight thousand, two hundred seventy-eight".