27425365128 has 128 divisors (see below), whose sum is σ = 87329280000. Its totient is φ = 7812002880.

The previous prime is 27425365091. The next prime is 27425365133. The reversal of 27425365128 is 82156352472.

27425365128 is a `hidden beast` number, since 2 + 7 + 42 + 536 + 51 + 28 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 473073 + ... + 527871.

It is an arithmetic number, because the mean of its divisors is an integer number (682260000).

Almost surely, 2^27425365128 is an apocalyptic number.

27425365128 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27425365128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43664640000).

27425365128 is an abundant number, since it is smaller than the sum of its proper divisors (59903914872).

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

27425365128 is a wasteful number, since it uses less digits than its factorization.

27425365128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55152 (or 55142 counting only the distinct ones).

The product of its digits is 806400, while the sum is 45.

The spelling of 27425365128 in words is "twenty-seven billion, four hundred twenty-five million, three hundred sixty-five thousand, one hundred twenty-eight".