27861151056 has 40 divisors (see below), whose sum is σ = 73506021504. Its totient is φ = 9089452800.

The previous prime is 27861151037. The next prime is 27861151061. The reversal of 27861151056 is 65015116872.

It is a junction number, because it is equal to n+sod(n) for n = 27861150999 and 27861151017.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6172645 + ... + 6177156.

Almost surely, 2^27861151056 is an apocalyptic number.

It is an amenable number.

27861151056 is an abundant number, since it is smaller than the sum of its proper divisors (45644870448).

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

27861151056 is a wasteful number, since it uses less digits than its factorization.

27861151056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12349859 (or 12349853 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 42.

The spelling of 27861151056 in words is "twenty-seven billion, eight hundred sixty-one million, one hundred fifty-one thousand, fifty-six".