7220780858280 has 256 divisors, whose sum is σ = 23864674636800. Its totient is φ = 1733262110720.

The previous prime is 7220780858237. The next prime is 7220780858287. The reversal of 7220780858280 is 828580870227.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 7220780858280.

It is not an unprimeable number, because it can be changed into a prime (7220780858287) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 151970287 + ... + 152017793.

It is an arithmetic number, because the mean of its divisors is an integer number (93221385300).

Almost surely, 2^{7220780858280} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7220780858280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11932337318400).

7220780858280 is an abundant number, since it is smaller than the sum of its proper divisors (16643893778520).

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

7220780858280 is a wasteful number, since it uses less digits than its factorization.

7220780858280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48664 (or 48660 counting only the distinct ones).

The product of its (nonzero) digits is 8028160, while the sum is 57.

The spelling of 7220780858280 in words is "seven trillion, two hundred twenty billion, seven hundred eighty million, eight hundred fifty-eight thousand, two hundred eighty".