27299377428 has 12 divisors (see below), whose sum is σ = 63698547360. Its totient is φ = 9099792472.

The previous prime is 27299377421. The next prime is 27299377433. The reversal of 27299377428 is 82477399272.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27299377421) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1137474048 + ... + 1137474071.

It is an arithmetic number, because the mean of its divisors is an integer number (5308212280).

Almost surely, 2^27299377428 is an apocalyptic number.

It is an amenable number.

27299377428 is an abundant number, since it is smaller than the sum of its proper divisors (36399169932).

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

27299377428 is a wasteful number, since it uses less digits than its factorization.

27299377428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2274948126 (or 2274948124 counting only the distinct ones).

The product of its digits is 21337344, while the sum is 60.

The spelling of 27299377428 in words is "twenty-seven billion, two hundred ninety-nine million, three hundred seventy-seven thousand, four hundred twenty-eight".