27696752128 has 20 divisors (see below), whose sum is σ = 55339410060. Its totient is φ = 13848375808.

The previous prime is 27696752123. The next prime is 27696752129. The reversal of 27696752128 is 82125769672.

It is a super-2 number, since 2×27696752128² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27696752123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27047098 + ... + 27048121.

It is an arithmetic number, because the mean of its divisors is an integer number (2766970503).

Almost surely, 2^27696752128 is an apocalyptic number.

It is an amenable number.

27696752128 is a deficient number, since it is larger than the sum of its proper divisors (27642657932).

27696752128 is an frugal number, since it uses more digits than its factorization.

27696752128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54095237 (or 54095221 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 55.

The spelling of 27696752128 in words is "twenty-seven billion, six hundred ninety-six million, seven hundred fifty-two thousand, one hundred twenty-eight".