27222420459780 has 432 divisors, whose sum is σ = 103465949212080. Its totient is φ = 5742479425536.

The previous prime is 27222420459761. The next prime is 27222420459791. The reversal of 27222420459780 is 8795402422272.

It is a happy number.

27222420459780 is a `hidden beast` number, since 2 + 7 + 2 + 2 + 2 + 42 + 0 + 4 + 597 + 8 + 0 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 7430901537024 + 19791518922756 = 2725968^2 + 4448766^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 648610636 + ... + 648652604.

It is an arithmetic number, because the mean of its divisors is an integer number (239504512065).

Almost surely, 2^{27222420459780} is an apocalyptic number.

27222420459780 is a gapful number since it is divisible by the number (20) 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 27222420459780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51732974606040).

27222420459780 is an abundant number, since it is smaller than the sum of its proper divisors (76243528752300).

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

27222420459780 is a wasteful number, since it uses less digits than its factorization.

27222420459780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47668 (or 47656 counting only the distinct ones).

The product of its (nonzero) digits is 9031680, while the sum is 54.

The spelling of 27222420459780 in words is "twenty-seven trillion, two hundred twenty-two billion, four hundred twenty million, four hundred fifty-nine thousand, seven hundred eighty".