72144617036444 has 12 divisors (see below), whose sum is σ = 126279925068864. Its totient is φ = 36064638445344.

The previous prime is 72144617036441. The next prime is 72144617036467. The reversal of 72144617036444 is 44463071644127.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72144617036441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1917497057 + ... + 1917534680.

It is an arithmetic number, because the mean of its divisors is an integer number (10523327089072).

Almost surely, 2^{72144617036444} is an apocalyptic number.

It is an amenable number.

72144617036444 is a deficient number, since it is larger than the sum of its proper divisors (54135308032420).

72144617036444 is a wasteful number, since it uses less digits than its factorization.

72144617036444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3835036444 (or 3835036442 counting only the distinct ones).

The product of its (nonzero) digits is 10838016, while the sum is 53.

The spelling of 72144617036444 in words is "seventy-two trillion, one hundred forty-four billion, six hundred seventeen million, thirty-six thousand, four hundred forty-four".