220543399969 has 2 divisors, whose sum is σ = 220543399970. Its totient is φ = 220543399968.

The previous prime is 220543399957. The next prime is 220543400023. The reversal of 220543399969 is 969993345022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 220486593600 + 56806369 = 469560^2 + 7537^2 .

It is a cyclic number.

It is not a de Polignac number, because 220543399969 - 2³⁷ = 83104446497 is a prime.

It is a super-2 number, since 2×220543399969² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (220543399949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110271699984 + 110271699985.

It is an arithmetic number, because the mean of its divisors is an integer number (110271699985).

Almost surely, 2^220543399969 is an apocalyptic number.

It is an amenable number.

220543399969 is a deficient number, since it is larger than the sum of its proper divisors (1).

220543399969 is an equidigital number, since it uses as much as digits as its factorization.

220543399969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28343520, while the sum is 61.

The spelling of 220543399969 in words is "two hundred twenty billion, five hundred forty-three million, three hundred ninety-nine thousand, nine hundred sixty-nine".