27771046461 has 12 divisors (see below), whose sum is σ = 40116310780. Its totient is φ = 18512841600.

The previous prime is 27771046453. The next prime is 27771046481. The reversal of 27771046461 is 16464017772.

It can be written as a sum of positive squares in 2 ways, for example, as 25524855225 + 2246191236 = 159765^2 + 47394^2 .

It is not a de Polignac number, because 27771046461 - 2³ = 27771046453 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27771046481) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62661 + ... + 243861.

Almost surely, 2^27771046461 is an apocalyptic number.

It is an amenable number.

27771046461 is a deficient number, since it is larger than the sum of its proper divisors (12345264319).

27771046461 is a wasteful number, since it uses less digits than its factorization.

27771046461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198236 (or 198233 counting only the distinct ones).

The product of its (nonzero) digits is 395136, while the sum is 45.

The spelling of 27771046461 in words is "twenty-seven billion, seven hundred seventy-one million, forty-six thousand, four hundred sixty-one".