27938862468 has 120 divisors (see below), whose sum is σ = 82248063744. Its totient is φ = 8193182400.

The previous prime is 27938862463. The next prime is 27938862491. The reversal of 27938862468 is 86426883972.

27938862468 is a `hidden beast` number, since 2 + 7 + 9 + 388 + 6 + 246 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (27938862463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 15955 + ... + 236922.

Almost surely, 2^27938862468 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27938862468, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41124031872).

27938862468 is an abundant number, since it is smaller than the sum of its proper divisors (54309201276).

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

27938862468 is a wasteful number, since it uses less digits than its factorization.

27938862468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252935 (or 252924 counting only the distinct ones).

The product of its digits is 55738368, while the sum is 63.

The spelling of 27938862468 in words is "twenty-seven billion, nine hundred thirty-eight million, eight hundred sixty-two thousand, four hundred sixty-eight".