27657045737 has 2 divisors, whose sum is σ = 27657045738. Its totient is φ = 27657045736.

The previous prime is 27657045673. The next prime is 27657045743. The reversal of 27657045737 is 73754075672.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25328404201 + 2328641536 = 159149^2 + 48256^2 .

It is a cyclic number.

It is not a de Polignac number, because 27657045737 - 2⁶ = 27657045673 is a prime.

It is a super-3 number, since 3×27657045737³ (a number of 32 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (27657045337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13828522868 + 13828522869.

It is an arithmetic number, because the mean of its divisors is an integer number (13828522869).

Almost surely, 2^27657045737 is an apocalyptic number.

It is an amenable number.

27657045737 is a deficient number, since it is larger than the sum of its proper divisors (1).

27657045737 is an equidigital number, since it uses as much as digits as its factorization.

27657045737 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8643600, while the sum is 53.

The spelling of 27657045737 in words is "twenty-seven billion, six hundred fifty-seven million, forty-five thousand, seven hundred thirty-seven".