75405152818 has 4 divisors (see below), whose sum is σ = 113107729230. Its totient is φ = 37702576408.

The previous prime is 75405152789. The next prime is 75405152819. The reversal of 75405152818 is 81825150457.

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., 74612561409 + 792591409 = 273153^2 + 28153^2 .

It is a super-2 number, since 2×75405152818² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (75405152819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18851288203 + ... + 18851288206.

Almost surely, 2^75405152818 is an apocalyptic number.

75405152818 is a deficient number, since it is larger than the sum of its proper divisors (37702576412).

75405152818 is a wasteful number, since it uses less digits than its factorization.

75405152818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37702576411.

The product of its (nonzero) digits is 448000, while the sum is 46.

The spelling of 75405152818 in words is "seventy-five billion, four hundred five million, one hundred fifty-two thousand, eight hundred eighteen".