220528553381 has 2 divisors, whose sum is σ = 220528553382. Its totient is φ = 220528553380.

The previous prime is 220528553339. The next prime is 220528553389. The reversal of 220528553381 is 183355825022.

220528553381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 129646804225 + 90881749156 = 360065^2 + 301466^2 .

It is a cyclic number.

It is not a de Polignac number, because 220528553381 - 2¹⁸ = 220528291237 is a prime.

It is a super-2 number, since 2×220528553381² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220528553389) 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 as a sum of consecutive naturals, namely, 110264276690 + 110264276691.

It is an arithmetic number, because the mean of its divisors is an integer number (110264276691).

Almost surely, 2^220528553381 is an apocalyptic number.

It is an amenable number.

220528553381 is a deficient number, since it is larger than the sum of its proper divisors (1).

220528553381 is an equidigital number, since it uses as much as digits as its factorization.

220528553381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576000, while the sum is 44.

The spelling of 220528553381 in words is "two hundred twenty billion, five hundred twenty-eight million, five hundred fifty-three thousand, three hundred eighty-one".