27550278028 has 36 divisors (see below), whose sum is σ = 60398692032. Its totient is φ = 10899010080.

The previous prime is 27550278011. The next prime is 27550278029. The reversal of 27550278028 is 82087205572.

It is not an unprimeable number, because it can be changed into a prime (27550278029) 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, 5403708 + ... + 5408803.

Almost surely, 2^27550278028 is an apocalyptic number.

27550278028 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

27550278028 is an abundant number, since it is smaller than the sum of its proper divisors (32848414004).

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

27550278028 is a wasteful number, since it uses less digits than its factorization.

27550278028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10812542 (or 10812533 counting only the distinct ones).

The product of its (nonzero) digits is 627200, while the sum is 46.

The spelling of 27550278028 in words is "twenty-seven billion, five hundred fifty million, two hundred seventy-eight thousand, twenty-eight".