27780055050055 has 32 divisors (see below), whose sum is σ = 42446143272960. Its totient is φ = 16948980798720.

The previous prime is 27780055050037. The next prime is 27780055050067. The reversal of 27780055050055 is 55005055008772.

It is a happy number.

It is not a de Polignac number, because 27780055050055 - 2⁷ = 27780055049927 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27780055049990 and 27780055050008.

It is a congruent 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 31 ways as a sum of consecutive naturals, for example, 767598790 + ... + 767634979.

It is an arithmetic number, because the mean of its divisors is an integer number (1326441977280).

Almost surely, 2^{27780055050055} is an apocalyptic number.

27780055050055 is a deficient number, since it is larger than the sum of its proper divisors (14666088222905).

27780055050055 is a wasteful number, since it uses less digits than its factorization.

27780055050055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1535233839.

The product of its (nonzero) digits is 2450000, while the sum is 49.

The spelling of 27780055050055 in words is "twenty-seven trillion, seven hundred eighty billion, fifty-five million, fifty thousand, fifty-five".