72044844019 has 2 divisors, whose sum is σ = 72044844020. Its totient is φ = 72044844018.

The previous prime is 72044843999. The next prime is 72044844041. The reversal of 72044844019 is 91044844027.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72044844019 is a prime.

It is a super-2 number, since 2×72044844019² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (72044844419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36022422009 + 36022422010.

It is an arithmetic number, because the mean of its divisors is an integer number (36022422010).

Almost surely, 2^72044844019 is an apocalyptic number.

72044844019 is a deficient number, since it is larger than the sum of its proper divisors (1).

72044844019 is an equidigital number, since it uses as much as digits as its factorization.

72044844019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 258048, while the sum is 43.

It can be divided in two parts, 720448 and 44019, that added together give a palindrome (764467).

The spelling of 72044844019 in words is "seventy-two billion, forty-four million, eight hundred forty-four thousand, nineteen".