5550996978 has 54 divisors (see below), whose sum is σ = 12788636679. Its totient is φ = 1739803392.

The previous prime is 5550996959. The next prime is 5550997007. The reversal of 5550996978 is 8796990555.

5550996978 is a `hidden beast` number, since 5 + 550 + 9 + 9 + 6 + 9 + 78 = 666.

It can be written as a sum of positive squares in 5 ways, for example, as 5485920489 + 65076489 = 74067^2 + 8067^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=52683.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 5373150 + ... + 5374182.

Almost surely, 2^5550996978 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5550996978

5550996978 is an abundant number, since it is smaller than the sum of its proper divisors (7237639701).

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

5550996978 is a wasteful number, since it uses less digits than its factorization.

5550996978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2108 (or 1055 counting only the distinct ones).

The product of its (nonzero) digits is 30618000, while the sum is 63.

The square root of 5550996978 is about 74505.0131065018. The cubic root of 5550996978 is about 1770.6130615974.

The spelling of 5550996978 in words is "five billion, five hundred fifty million, nine hundred ninety-six thousand, nine hundred seventy-eight".