27550280078 has 4 divisors (see below), whose sum is σ = 41325420120. Its totient is φ = 13775140038.

The previous prime is 27550280059. The next prime is 27550280089. The reversal of 27550280078 is 87008205572.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6887570018 + ... + 6887570021.

It is an arithmetic number, because the mean of its divisors is an integer number (10331355030).

Almost surely, 2^27550280078 is an apocalyptic number.

27550280078 is a deficient number, since it is larger than the sum of its proper divisors (13775140042).

27550280078 is a wasteful number, since it uses less digits than its factorization.

27550280078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13775140041.

The product of its (nonzero) digits is 313600, while the sum is 44.

The spelling of 27550280078 in words is "twenty-seven billion, five hundred fifty million, two hundred eighty thousand, seventy-eight".