72344561263 has 6 divisors (see below), whose sum is σ = 78337602024. Its totient is φ = 66779594856.

The previous prime is 72344561167. The next prime is 72344561309. The reversal of 72344561263 is 36216544327.

It is not a de Polignac number, because 72344561263 - 2⁹ = 72344560751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72344561563) 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 5 ways as a sum of consecutive naturals, for example, 214036995 + ... + 214037332.

It is an arithmetic number, because the mean of its divisors is an integer number (13056267004).

Almost surely, 2^72344561263 is an apocalyptic number.

72344561263 is a deficient number, since it is larger than the sum of its proper divisors (5993040761).

72344561263 is a wasteful number, since it uses less digits than its factorization.

72344561263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428074353 (or 428074340 counting only the distinct ones).

The product of its digits is 725760, while the sum is 43.

The spelling of 72344561263 in words is "seventy-two billion, three hundred forty-four million, five hundred sixty-one thousand, two hundred sixty-three".