7842433382018 has 4 divisors (see below), whose sum is σ = 11763650073030. Its totient is φ = 3921216691008.

The previous prime is 7842433382011. The next prime is 7842433382033. The reversal of 7842433382018 is 8102833342487.

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

It can be written as a sum of positive squares in only one way, i.e., 7827477804169 + 14955577849 = 2797763^2 + 122293^2 .

It is a super-2 number, since 2×7842433382018² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7842433382011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1960608345503 + ... + 1960608345506.

Almost surely, 2^{7842433382018} is an apocalyptic number.

7842433382018 is a deficient number, since it is larger than the sum of its proper divisors (3921216691012).

7842433382018 is a wasteful number, since it uses less digits than its factorization.

7842433382018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3921216691011.

The product of its (nonzero) digits is 6193152, while the sum is 53.

The spelling of 7842433382018 in words is "seven trillion, eight hundred forty-two billion, four hundred thirty-three million, three hundred eighty-two thousand, eighteen".