72511001724220 has 12 divisors (see below), whose sum is σ = 152273103620904. Its totient is φ = 29004400689680.

The previous prime is 72511001724199. The next prime is 72511001724221. The reversal of 72511001724220 is 2242710011527.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72511001724221) 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 3 ways as a sum of consecutive naturals, for example, 1812775043086 + ... + 1812775043125.

It is an arithmetic number, because the mean of its divisors is an integer number (12689425301742).

Almost surely, 2^{72511001724220} is an apocalyptic number.

It is an amenable number.

72511001724220 is an abundant number, since it is smaller than the sum of its proper divisors (79762101896684).

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

72511001724220 is a wasteful number, since it uses less digits than its factorization.

72511001724220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3625550086220 (or 3625550086218 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 34.

Adding to 72511001724220 its reverse (2242710011527), we get a palindrome (74753711735747).

The spelling of 72511001724220 in words is "seventy-two trillion, five hundred eleven billion, one million, seven hundred twenty-four thousand, two hundred twenty".