72031654244 has 24 divisors (see below), whose sum is σ = 145604094048. Its totient is φ = 30815680640.

The previous prime is 72031654241. The next prime is 72031654249. The reversal of 72031654244 is 44245613027.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 72031654198 and 72031654207.

It is not an unprimeable number, because it can be changed into a prime (72031654241) by changing a digit.

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, 48148754 + ... + 48150249.

It is an arithmetic number, because the mean of its divisors is an integer number (6066837252).

Almost surely, 2^72031654244 is an apocalyptic number.

It is an amenable number.

72031654244 is an abundant number, since it is smaller than the sum of its proper divisors (73572439804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72031654244 is a wasteful number, since it uses less digits than its factorization.

72031654244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96299035 (or 96299033 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 38.

The spelling of 72031654244 in words is "seventy-two billion, thirty-one million, six hundred fifty-four thousand, two hundred forty-four".