30555320222440 has 32 divisors (see below), whose sum is σ = 74037891309480. Its totient is φ = 11281964389632.

The previous prime is 30555320222261. The next prime is 30555320222443. The reversal of 30555320222440 is 4422202355503.

It can be written as a sum of positive squares in 4 ways, for example, as 11300583149956 + 19254737072484 = 3361634^2 + 4388022^2 .

It is a super-2 number, since 2×30555320222440² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30555320222440.

It is not an unprimeable number, because it can be changed into a prime (30555320222443) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 29380115079 + ... + 29380116118.

Almost surely, 2^{30555320222440} is an apocalyptic number.

It is an amenable number.

30555320222440 is an abundant number, since it is smaller than the sum of its proper divisors (43482571087040).

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

30555320222440 is a wasteful number, since it uses less digits than its factorization.

30555320222440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58760231221 (or 58760231217 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 37.

Adding to 30555320222440 its reverse (4422202355503), we get a palindrome (34977522577943).

The spelling of 30555320222440 in words is "thirty trillion, five hundred fifty-five billion, three hundred twenty million, two hundred twenty-two thousand, four hundred forty".