7508508420818 has 4 divisors (see below), whose sum is σ = 11262762631230. Its totient is φ = 3754254210408.

The previous prime is 7508508420781. The next prime is 7508508420857. The reversal of 7508508420818 is 8180248058057.

It is a happy number.

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., 6971728002409 + 536780418409 = 2640403^2 + 732653^2 .

It is an unprimeable number.

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, 1877127105203 + ... + 1877127105206.

Almost surely, 2^{7508508420818} is an apocalyptic number.

7508508420818 is a deficient number, since it is larger than the sum of its proper divisors (3754254210412).

7508508420818 is a wasteful number, since it uses less digits than its factorization.

7508508420818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3754254210411.

The product of its (nonzero) digits is 5734400, while the sum is 56.

The spelling of 7508508420818 in words is "seven trillion, five hundred eight billion, five hundred eight million, four hundred twenty thousand, eight hundred eighteen".