5639768778 has 48 divisors (see below), whose sum is σ = 13127284224. Its totient is φ = 1610602560.

The previous prime is 5639768777. The next prime is 5639768779. The reversal of 5639768778 is 8778679365.

It is an interprime number because it is at equal distance from previous prime (5639768777) and next prime (5639768779).

It is a super-2 number, since 2×5639768778² = 63613983738607226568, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5639768777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 994126 + ... + 999782.

It is an arithmetic number, because the mean of its divisors is an integer number (273485088).

Almost surely, 2^5639768778 is an apocalyptic number.

5639768778 is an abundant number, since it is smaller than the sum of its proper divisors (7487515446).

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

5639768778 is a wasteful number, since it uses less digits than its factorization.

5639768778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9067 (or 9060 counting only the distinct ones).

The product of its digits is 106686720, while the sum is 66.

The square root of 5639768778 is about 75098.3939775013. The cubic root of 5639768778 is about 1780.0017651373.

The spelling of 5639768778 in words is "five billion, six hundred thirty-nine million, seven hundred sixty-eight thousand, seven hundred seventy-eight".