27381890256 has 80 divisors (see below), whose sum is σ = 83026721664. Its totient is φ = 7611950592.

The previous prime is 27381890231. The next prime is 27381890257. The reversal of 27381890256 is 65209818372.

It is a junction number, because it is equal to n+sod(n) for n = 27381890199 and 27381890208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27381890257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1088835 + ... + 1113698.

Almost surely, 2^27381890256 is an apocalyptic number.

It is an amenable number.

27381890256 is an abundant number, since it is smaller than the sum of its proper divisors (55644831408).

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

27381890256 is a wasteful number, since it uses less digits than its factorization.

27381890256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2202588 (or 2202582 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 51.

The spelling of 27381890256 in words is "twenty-seven billion, three hundred eighty-one million, eight hundred ninety thousand, two hundred fifty-six".