1027087810561 has 4 divisors (see below), whose sum is σ = 1087504740612. Its totient is φ = 966670880512.

The previous prime is 1027087810531. The next prime is 1027087810579. The reversal of 1027087810561 is 1650187807201.

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 369626304961 + 657461505600 = 607969^2 + 810840^2 .

It is a cyclic number.

It is not a de Polignac number, because 1027087810561 - 2⁷ = 1027087810433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1027087810501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30208465000 + ... + 30208465033.

It is an arithmetic number, because the mean of its divisors is an integer number (271876185153).

Almost surely, 2^{1027087810561} is an apocalyptic number.

It is an amenable number.

1027087810561 is a deficient number, since it is larger than the sum of its proper divisors (60416930051).

1027087810561 is an equidigital number, since it uses as much as digits as its factorization.

1027087810561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60416930050.

The product of its (nonzero) digits is 188160, while the sum is 46.

The spelling of 1027087810561 in words is "one trillion, twenty-seven billion, eighty-seven million, eight hundred ten thousand, five hundred sixty-one".