75378338642 has 8 divisors (see below), whose sum is σ = 113188180476. Its totient is φ = 37648945152.

The previous prime is 75378338597. The next prime is 75378338683. The reversal of 75378338642 is 24683387357.

It can be written as a sum of positive squares in 2 ways, for example, as 74490239041 + 888099601 = 272929^2 + 29801^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20109743 + ... + 20113490.

Almost surely, 2^75378338642 is an apocalyptic number.

75378338642 is a deficient number, since it is larger than the sum of its proper divisors (37809841834).

75378338642 is a wasteful number, since it uses less digits than its factorization.

75378338642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40224172.

The product of its digits is 20321280, while the sum is 56.

The spelling of 75378338642 in words is "seventy-five billion, three hundred seventy-eight million, three hundred thirty-eight thousand, six hundred forty-two".