127819044019 has 16 divisors (see below), whose sum is σ = 131717577600. Its totient is φ = 123959808000.

The previous prime is 127819044013. The next prime is 127819044029. The reversal of 127819044019 is 910440918721.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-127819044019 is a prime.

It is a super-2 number, since 2×127819044019² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 127819044019.

It is not an unprimeable number, because it can be changed into a prime (127819044013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4976029 + ... + 5001649.

It is an arithmetic number, because the mean of its divisors is an integer number (8232348600).

Almost surely, 2^127819044019 is an apocalyptic number.

127819044019 is a deficient number, since it is larger than the sum of its proper divisors (3898533581).

127819044019 is a wasteful number, since it uses less digits than its factorization.

127819044019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26382.

The product of its (nonzero) digits is 145152, while the sum is 46.

The spelling of 127819044019 in words is "one hundred twenty-seven billion, eight hundred nineteen million, forty-four thousand, nineteen".