27731660416 has 32 divisors (see below), whose sum is σ = 56422140480. Its totient is φ = 13570809600.

The previous prime is 27731660413. The next prime is 27731660417. The reversal of 27731660416 is 61406613772.

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (27731660413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2298810 + ... + 2310841.

It is an arithmetic number, because the mean of its divisors is an integer number (1763191890).

Almost surely, 2^27731660416 is an apocalyptic number.

It is an amenable number.

27731660416 is an abundant number, since it is smaller than the sum of its proper divisors (28690480064).

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

27731660416 is an equidigital number, since it uses as much as digits as its factorization.

27731660416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4609712 (or 4609700 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 43.

The spelling of 27731660416 in words is "twenty-seven billion, seven hundred thirty-one million, six hundred sixty thousand, four hundred sixteen".