1087814331217 has 2 divisors, whose sum is σ = 1087814331218. Its totient is φ = 1087814331216.

The previous prime is 1087814331211. The next prime is 1087814331271. The reversal of 1087814331217 is 7121334187801.

Together with next prime (1087814331271) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 613753163776 + 474061167441 = 783424^2 + 688521^2 .

It is a cyclic number.

It is not a de Polignac number, because 1087814331217 - 2³⁹ = 538058517329 is a prime.

It is not a weakly prime, because it can be changed into another prime (1087814331211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 543907165608 + 543907165609.

It is an arithmetic number, because the mean of its divisors is an integer number (543907165609).

Almost surely, 2^{1087814331217} is an apocalyptic number.

It is an amenable number.

1087814331217 is a deficient number, since it is larger than the sum of its proper divisors (1).

1087814331217 is an equidigital number, since it uses as much as digits as its factorization.

1087814331217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 225792, while the sum is 46.

The spelling of 1087814331217 in words is "one trillion, eighty-seven billion, eight hundred fourteen million, three hundred thirty-one thousand, two hundred seventeen".