72441654973 has 2 divisors, whose sum is σ = 72441654974. Its totient is φ = 72441654972.

The previous prime is 72441654959. The next prime is 72441654997. The reversal of 72441654973 is 37945614427.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62841966489 + 9599688484 = 250683^2 + 97978^2 .

It is a cyclic number.

It is not a de Polignac number, because 72441654973 - 2⁵ = 72441654941 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72441654973.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72441654913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36220827486 + 36220827487.

It is an arithmetic number, because the mean of its divisors is an integer number (36220827487).

Almost surely, 2^72441654973 is an apocalyptic number.

It is an amenable number.

72441654973 is a deficient number, since it is larger than the sum of its proper divisors (1).

72441654973 is an equidigital number, since it uses as much as digits as its factorization.

72441654973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5080320, while the sum is 52.

The spelling of 72441654973 in words is "seventy-two billion, four hundred forty-one million, six hundred fifty-four thousand, nine hundred seventy-three".