27820574128 has 30 divisors (see below), whose sum is σ = 55164580724. Its totient is φ = 13584655392.

The previous prime is 27820574101. The next prime is 27820574141. The reversal of 27820574128 is 82147502872.

It is a happy number.

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 5 ways as a sum of consecutive naturals, for example, 4371813 + ... + 4378171.

Almost surely, 2^27820574128 is an apocalyptic number.

It is an amenable number.

27820574128 is a deficient number, since it is larger than the sum of its proper divisors (27344006596).

27820574128 is an frugal number, since it uses more digits than its factorization.

27820574128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12769 (or 6404 counting only the distinct ones).

The product of its (nonzero) digits is 501760, while the sum is 46.

The spelling of 27820574128 in words is "twenty-seven billion, eight hundred twenty million, five hundred seventy-four thousand, one hundred twenty-eight".