72255344022 has 48 divisors (see below), whose sum is σ = 158383920240. Its totient is φ = 23803718400.

The previous prime is 72255344003. The next prime is 72255344033. The reversal of 72255344022 is 22044355227.

It is a super-2 number, since 2×72255344022² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4029697 + ... + 4047587.

It is an arithmetic number, because the mean of its divisors is an integer number (3299665005).

Almost surely, 2^72255344022 is an apocalyptic number.

72255344022 is an abundant number, since it is smaller than the sum of its proper divisors (86128576218).

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

72255344022 is a wasteful number, since it uses less digits than its factorization.

72255344022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20509 (or 20506 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 36.

Adding to 72255344022 its reverse (22044355227), we get a palindrome (94299699249).

The spelling of 72255344022 in words is "seventy-two billion, two hundred fifty-five million, three hundred forty-four thousand, twenty-two".