27281054705 has 16 divisors (see below), whose sum is σ = 33353134608. Its totient is φ = 21415968000.

The previous prime is 27281054701. The next prime is 27281054737. The reversal of 27281054705 is 50745018272.

It can be written as a sum of positive squares in 8 ways, for example, as 20055374689 + 7225680016 = 141617^2 + 85004^2 .

It is not a de Polignac number, because 27281054705 - 2² = 27281054701 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27281054701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22175 + ... + 234635.

It is an arithmetic number, because the mean of its divisors is an integer number (2084570913).

Almost surely, 2^27281054705 is an apocalyptic number.

It is an amenable number.

27281054705 is a deficient number, since it is larger than the sum of its proper divisors (6072079903).

27281054705 is a wasteful number, since it uses less digits than its factorization.

27281054705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212948.

The product of its (nonzero) digits is 156800, while the sum is 41.

The spelling of 27281054705 in words is "twenty-seven billion, two hundred eighty-one million, fifty-four thousand, seven hundred five".