27490554457 has 2 divisors, whose sum is σ = 27490554458. Its totient is φ = 27490554456.

The previous prime is 27490554433. The next prime is 27490554479. The reversal of 27490554457 is 75445509472.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18280121616 + 9210432841 = 135204^2 + 95971^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27490554457 is a prime.

It is not a weakly prime, because it can be changed into another prime (27490555457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13745277228 + 13745277229.

It is an arithmetic number, because the mean of its divisors is an integer number (13745277229).

Almost surely, 2^27490554457 is an apocalyptic number.

It is an amenable number.

27490554457 is a deficient number, since it is larger than the sum of its proper divisors (1).

27490554457 is an equidigital number, since it uses as much as digits as its factorization.

27490554457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7056000, while the sum is 52.

The spelling of 27490554457 in words is "twenty-seven billion, four hundred ninety million, five hundred fifty-four thousand, four hundred fifty-seven".