15222340424240 has 80 divisors (see below), whose sum is σ = 35630547237120. Its totient is φ = 6047914429440.

The previous prime is 15222340424227. The next prime is 15222340424251. The reversal of 15222340424240 is 4242404322251.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 15222340424240.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33927770 + ... + 34373510.

It is an arithmetic number, because the mean of its divisors is an integer number (445381840464).

Almost surely, 2^{15222340424240} is an apocalyptic number.

15222340424240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15222340424240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17815273618560).

15222340424240 is an abundant number, since it is smaller than the sum of its proper divisors (20408206812880).

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

15222340424240 is a wasteful number, since it uses less digits than its factorization.

15222340424240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448630 (or 448624 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 35.

Adding to 15222340424240 its reverse (4242404322251), we get a palindrome (19464744746491).

The spelling of 15222340424240 in words is "fifteen trillion, two hundred twenty-two billion, three hundred forty million, four hundred twenty-four thousand, two hundred forty".