27731346756 has 12 divisors (see below), whose sum is σ = 64706475792. Its totient is φ = 9243782248.

The previous prime is 27731346743. The next prime is 27731346787. The reversal of 27731346756 is 65764313772.

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

It is a junction number, because it is equal to n+sod(n) for n = 27731346699 and 27731346708.

It is an unprimeable number.

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, 1155472770 + ... + 1155472793.

It is an arithmetic number, because the mean of its divisors is an integer number (5392206316).

Almost surely, 2^27731346756 is an apocalyptic number.

It is an amenable number.

27731346756 is an abundant number, since it is smaller than the sum of its proper divisors (36975129036).

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

27731346756 is a wasteful number, since it uses less digits than its factorization.

27731346756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2310945570 (or 2310945568 counting only the distinct ones).

The product of its digits is 4445280, while the sum is 51.

The spelling of 27731346756 in words is "twenty-seven billion, seven hundred thirty-one million, three hundred forty-six thousand, seven hundred fifty-six".