27938880855 has 40 divisors (see below), whose sum is σ = 50109211152. Its totient is φ = 14892947712.

The previous prime is 27938880841. The next prime is 27938880859. The reversal of 27938880855 is 55808883972.

It is not a de Polignac number, because 27938880855 - 2⁴ = 27938880839 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27938880792 and 27938880801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27938880859) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 803919 + ... + 837951.

Almost surely, 2^27938880855 is an apocalyptic number.

27938880855 is a deficient number, since it is larger than the sum of its proper divisors (22170330297).

27938880855 is a wasteful number, since it uses less digits than its factorization.

27938880855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36077 (or 36068 counting only the distinct ones).

The product of its (nonzero) digits is 38707200, while the sum is 63.

The spelling of 27938880855 in words is "twenty-seven billion, nine hundred thirty-eight million, eight hundred eighty thousand, eight hundred fifty-five".