1089216527257 has 2 divisors, whose sum is σ = 1089216527258. Its totient is φ = 1089216527256.

The previous prime is 1089216527237. The next prime is 1089216527309. The reversal of 1089216527257 is 7527256129801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 550072905561 + 539143621696 = 741669^2 + 734264^2 .

It is a cyclic number.

It is not a de Polignac number, because 1089216527257 - 2¹¹ = 1089216525209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1089216527198 and 1089216527207.

It is not a weakly prime, because it can be changed into another prime (1089216527227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 544608263628 + 544608263629.

It is an arithmetic number, because the mean of its divisors is an integer number (544608263629).

Almost surely, 2^{1089216527257} is an apocalyptic number.

It is an amenable number.

1089216527257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1089216527257 is an equidigital number, since it uses as much as digits as its factorization.

1089216527257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4233600, while the sum is 55.

The spelling of 1089216527257 in words is "one trillion, eighty-nine billion, two hundred sixteen million, five hundred twenty-seven thousand, two hundred fifty-seven".