75639342378 has 8 divisors (see below), whose sum is σ = 151278684768. Its totient is φ = 25213114124.

The previous prime is 75639342329. The next prime is 75639342391. The reversal of 75639342378 is 87324393657.

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

75639342378 is an admirable number.

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, 6303278526 + ... + 6303278537.

It is an arithmetic number, because the mean of its divisors is an integer number (18909835596).

Almost surely, 2^75639342378 is an apocalyptic number.

75639342378 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

75639342378 is a wasteful number, since it uses less digits than its factorization.

75639342378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12606557068.

The product of its digits is 22861440, while the sum is 57.

The spelling of 75639342378 in words is "seventy-five billion, six hundred thirty-nine million, three hundred forty-two thousand, three hundred seventy-eight".