5550810872778 has 24 divisors (see below), whose sum is σ = 12734213179428. Its totient is φ = 1741430861952.

The previous prime is 5550810872777. The next prime is 5550810872779. The reversal of 5550810872778 is 8772780180555.

5550810872778 is a `hidden beast` number, since 5 + 550 + 8 + 1 + 0 + 8 + 7 + 2 + 7 + 78 = 666.

It is an interprime number because it is at equal distance from previous prime (5550810872777) and next prime (5550810872779).

It can be written as a sum of positive squares in 2 ways, for example, as 5247228606489 + 303582266289 = 2290683^2 + 550983^2 .

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (5550810872777) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9069952101 + ... + 9069952712.

Almost surely, 2^{5550810872778} is an apocalyptic number.

5550810872778 is an abundant number, since it is smaller than the sum of its proper divisors (7183402306650).

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

5550810872778 is a wasteful number, since it uses less digits than its factorization.

5550810872778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18139904838 (or 18139904835 counting only the distinct ones).

The product of its (nonzero) digits is 43904000, while the sum is 63.

The spelling of 5550810872778 in words is "five trillion, five hundred fifty billion, eight hundred ten million, eight hundred seventy-two thousand, seven hundred seventy-eight".