27128887396 has 24 divisors (see below), whose sum is σ = 51441200384. Its totient is φ = 12444204960.

The previous prime is 27128887393. The next prime is 27128887397. The reversal of 27128887396 is 69378882172.

It is a super-3 number, since 3×27128887396³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (27128887391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1591860 + ... + 1608811.

Almost surely, 2^27128887396 is an apocalyptic number.

27128887396 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

27128887396 is a deficient number, since it is larger than the sum of its proper divisors (24312312988).

27128887396 is a wasteful number, since it uses less digits than its factorization.

27128887396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3200851 (or 3200849 counting only the distinct ones).

The product of its digits is 16257024, while the sum is 61.

The spelling of 27128887396 in words is "twenty-seven billion, one hundred twenty-eight million, eight hundred eighty-seven thousand, three hundred ninety-six".