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542220817819 is a prime number
BaseRepresentation
bin1111110001111101110…
…00010001010110011011
31220211120022010111001211
413320332320101112123
532340432012132234
61053032013523551
754113510622562
oct7707670212633
91824508114054
10542220817819
11199a5557486a
12891047a35b7
133c192340405
141c35a72abd9
15e18759a164
hex7e3ee1159b

542220817819 has 2 divisors, whose sum is σ = 542220817820. Its totient is φ = 542220817818.

The previous prime is 542220817781. The next prime is 542220817843. The reversal of 542220817819 is 918718022245.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-542220817819 is a prime.

It is a super-2 number, since 2×5422208178192 (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (542220817219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271110408909 + 271110408910.

It is an arithmetic number, because the mean of its divisors is an integer number (271110408910).

Almost surely, 2542220817819 is an apocalyptic number.

542220817819 is a deficient number, since it is larger than the sum of its proper divisors (1).

542220817819 is an equidigital number, since it uses as much as digits as its factorization.

542220817819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 645120, while the sum is 49.

The spelling of 542220817819 in words is "five hundred forty-two billion, two hundred twenty million, eight hundred seventeen thousand, eight hundred nineteen".