27755278028 has 24 divisors (see below), whose sum is σ = 48678174720. Its totient is φ = 13847261840.

The previous prime is 27755278003. The next prime is 27755278043. The reversal of 27755278028 is 82087255772.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4515125 + ... + 4521267.

It is an arithmetic number, because the mean of its divisors is an integer number (2028257280).

Almost surely, 2^27755278028 is an apocalyptic number.

It is an amenable number.

27755278028 is a deficient number, since it is larger than the sum of its proper divisors (20922896692).

27755278028 is a wasteful number, since it uses less digits than its factorization.

27755278028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8437 (or 8435 counting only the distinct ones).

The product of its (nonzero) digits is 4390400, while the sum is 53.

The spelling of 27755278028 in words is "twenty-seven billion, seven hundred fifty-five million, two hundred seventy-eight thousand, twenty-eight".