27680452457 has 12 divisors (see below), whose sum is σ = 32202689220. Its totient is φ = 23723906976.

The previous prime is 27680452447. The next prime is 27680452477. The reversal of 27680452457 is 75425408672.

It can be written as a sum of positive squares in 2 ways, for example, as 16893760576 + 10786691881 = 129976^2 + 103859^2 .

It is not a de Polignac number, because 27680452457 - 2⁸ = 27680452201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27680452447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 729683 + ... + 766679.

It is an arithmetic number, because the mean of its divisors is an integer number (2683557435).

Almost surely, 2^27680452457 is an apocalyptic number.

It is an amenable number.

27680452457 is a deficient number, since it is larger than the sum of its proper divisors (4522236763).

27680452457 is a wasteful number, since it uses less digits than its factorization.

27680452457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52280 (or 52273 counting only the distinct ones).

The product of its (nonzero) digits is 3763200, while the sum is 50.

The spelling of 27680452457 in words is "twenty-seven billion, six hundred eighty million, four hundred fifty-two thousand, four hundred fifty-seven".