643203263556119 has 8 divisors (see below), whose sum is σ = 750091269453600. Its totient is φ = 551317083047808.

The previous prime is 643203263556103. The next prime is 643203263556167. The reversal of 643203263556119 is 911655362302346.

It is not a de Polignac number, because 643203263556119 - 2⁴ = 643203263556103 is a prime.

It is a super-2 number, since 2×643203263556119² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (643203263456119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 937614086474 + ... + 937614087159.

It is an arithmetic number, because the mean of its divisors is an integer number (93761408681700).

Almost surely, 2^{643203263556119} is an apocalyptic number.

643203263556119 is a deficient number, since it is larger than the sum of its proper divisors (106888005897481).

643203263556119 is an equidigital number, since it uses as much as digits as its factorization.

643203263556119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1875228173654 (or 1875228173640 counting only the distinct ones).

The product of its (nonzero) digits is 20995200, while the sum is 56.

The spelling of 643203263556119 in words is "six hundred forty-three trillion, two hundred three billion, two hundred sixty-three million, five hundred fifty-six thousand, one hundred nineteen".