72531065072 has 40 divisors (see below), whose sum is σ = 144367434000. Its totient is φ = 35275502592.

The previous prime is 72531065071. The next prime is 72531065077. The reversal of 72531065072 is 27056013527.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72531065071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2381879 + ... + 2412137.

It is an arithmetic number, because the mean of its divisors is an integer number (3609185850).

Almost surely, 2^72531065072 is an apocalyptic number.

It is an amenable number.

72531065072 is a deficient number, since it is larger than the sum of its proper divisors (71836368928).

72531065072 is a wasteful number, since it uses less digits than its factorization.

72531065072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34353 (or 34347 counting only the distinct ones).

The product of its (nonzero) digits is 88200, while the sum is 38.

Adding to 72531065072 its reverse (27056013527), we get a palindrome (99587078599).

The spelling of 72531065072 in words is "seventy-two billion, five hundred thirty-one million, sixty-five thousand, seventy-two".