57056027661 has 24 divisors (see below), whose sum is σ = 82681749696. Its totient is φ = 37914065280.

The previous prime is 57056027647. The next prime is 57056027669. The reversal of 57056027661 is 16672065075.

57056027661 is a `hidden beast` number, since 5 + 7 + 0 + 560 + 27 + 6 + 61 = 666.

It is not a de Polignac number, because 57056027661 - 2⁵ = 57056027629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57056027669) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 4557136 + ... + 4569638.

It is an arithmetic number, because the mean of its divisors is an integer number (3445072904).

Almost surely, 2^57056027661 is an apocalyptic number.

It is an amenable number.

57056027661 is a deficient number, since it is larger than the sum of its proper divisors (25625722035).

57056027661 is a wasteful number, since it uses less digits than its factorization.

57056027661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14113 (or 14110 counting only the distinct ones).

The product of its (nonzero) digits is 529200, while the sum is 45.

The spelling of 57056027661 in words is "fifty-seven billion, fifty-six million, twenty-seven thousand, six hundred sixty-one".