27917039128 has 32 divisors (see below), whose sum is σ = 57668429520. Its totient is φ = 12563920000.

The previous prime is 27917039099. The next prime is 27917039159. The reversal of 27917039128 is 82193071972.

It is a super-2 number, since 2×27917039128² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1561603 + ... + 1579378.

Almost surely, 2^27917039128 is an apocalyptic number.

It is an amenable number.

27917039128 is an abundant number, since it is smaller than the sum of its proper divisors (29751390392).

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

27917039128 is a wasteful number, since it uses less digits than its factorization.

27917039128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3141099 (or 3141095 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 49.

The spelling of 27917039128 in words is "twenty-seven billion, nine hundred seventeen million, thirty-nine thousand, one hundred twenty-eight".