72420317260 has 24 divisors (see below), whose sum is σ = 152102895840. Its totient is φ = 28964273664.

The previous prime is 72420317257. The next prime is 72420317267. The reversal of 72420317260 is 6271302427.

It is not an unprimeable number, because it can be changed into a prime (72420317267) 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, 84229 + ... + 389788.

It is an arithmetic number, because the mean of its divisors is an integer number (6337620660).

Almost surely, 2^72420317260 is an apocalyptic number.

It is an amenable number.

72420317260 is an abundant number, since it is smaller than the sum of its proper divisors (79682578580).

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

72420317260 is a wasteful number, since it uses less digits than its factorization.

72420317260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481665 (or 481663 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 34.

Adding to 72420317260 its reverse (6271302427), we get a palindrome (78691619687).

The spelling of 72420317260 in words is "seventy-two billion, four hundred twenty million, three hundred seventeen thousand, two hundred sixty".