27475450757 has 4 divisors (see below), whose sum is σ = 27477449676. Its totient is φ = 27473451840.

The previous prime is 27475450733. The next prime is 27475450759. The reversal of 27475450757 is 75705457472.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3892012996 + 23583437761 = 62386^2 + 153569^2 .

It is a cyclic number.

It is not a de Polignac number, because 27475450757 - 2⁸ = 27475450501 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27475450699 and 27475450708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27475450759) 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 3 ways as a sum of consecutive naturals, for example, 978698 + ... + 1006379.

It is an arithmetic number, because the mean of its divisors is an integer number (6869362419).

Almost surely, 2^27475450757 is an apocalyptic number.

It is an amenable number.

27475450757 is a deficient number, since it is larger than the sum of its proper divisors (1998919).

27475450757 is a wasteful number, since it uses less digits than its factorization.

27475450757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1998918.

The product of its (nonzero) digits is 9604000, while the sum is 53.

The spelling of 27475450757 in words is "twenty-seven billion, four hundred seventy-five million, four hundred fifty thousand, seven hundred fifty-seven".