5068891978 has 8 divisors (see below), whose sum is σ = 7614637668. Its totient is φ = 2530679424.

The previous prime is 5068891873. The next prime is 5068892009. The reversal of 5068891978 is 8791988605.

It can be written as a sum of positive squares in 2 ways, for example, as 4773842649 + 295049329 = 69093^2 + 17177^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1881601 + ... + 1884292.

Almost surely, 2^5068891978 is an apocalyptic number.

5068891978 is a deficient number, since it is larger than the sum of its proper divisors (2545745690).

5068891978 is a wasteful number, since it uses less digits than its factorization.

5068891978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3766568.

The product of its (nonzero) digits is 8709120, while the sum is 61.

The square root of 5068891978 is about 71196.1514268854. The cubic root of 5068891978 is about 1717.7937254009.

The spelling of 5068891978 in words is "five billion, sixty-eight million, eight hundred ninety-one thousand, nine hundred seventy-eight".