27550539142878 has 16 divisors (see below), whose sum is σ = 55206838519056. Its totient is φ = 9165886342080.

The previous prime is 27550539142807. The next prime is 27550539142883. The reversal of 27550539142878 is 87824193505572.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4406673001 + ... + 4406679252.

It is an arithmetic number, because the mean of its divisors is an integer number (3450427407441).

Almost surely, 2^{27550539142878} is an apocalyptic number.

27550539142878 is an abundant number, since it is smaller than the sum of its proper divisors (27656299376178).

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

27550539142878 is a wasteful number, since it uses less digits than its factorization.

27550539142878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8813352779.

The product of its (nonzero) digits is 169344000, while the sum is 66.

The spelling of 27550539142878 in words is "twenty-seven trillion, five hundred fifty billion, five hundred thirty-nine million, one hundred forty-two thousand, eight hundred seventy-eight".