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220440443141 = 285777158013
BaseRepresentation
bin1100110101001101000…
…1100011100100000101
3210001222212120210011002
43031103101203210011
512102430223140031
6245134031423045
721632501564462
oct3152321434405
9701885523132
10220440443141
1185540979716
1236881084a85
1317a31028849
14a952a98669
155b02be1ccb
hex3353463905

220440443141 has 4 divisors (see below), whose sum is σ = 220517604012. Its totient is φ = 220363282272.

The previous prime is 220440443107. The next prime is 220440443161. The reversal of 220440443141 is 141344044022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 128558102500 + 91882340641 = 358550^2 + 303121^2 .

It is a cyclic number.

It is not a de Polignac number, because 220440443141 - 214 = 220440426757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220440443161) 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 in 3 ways as a sum of consecutive naturals, for example, 38576150 + ... + 38581863.

It is an arithmetic number, because the mean of its divisors is an integer number (55129401003).

Almost surely, 2220440443141 is an apocalyptic number.

It is an amenable number.

220440443141 is a deficient number, since it is larger than the sum of its proper divisors (77160871).

220440443141 is an equidigital number, since it uses as much as digits as its factorization.

220440443141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77160870.

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 220440443141 its reverse (141344044022), we get a palindrome (361784487163).

The spelling of 220440443141 in words is "two hundred twenty billion, four hundred forty million, four hundred forty-three thousand, one hundred forty-one".

Divisors: 1 2857 77158013 220440443141