1081954864717 has 4 divisors (see below), whose sum is σ = 1081958901660. Its totient is φ = 1081950827776.

The previous prime is 1081954864709. The next prime is 1081954864733. The reversal of 1081954864717 is 7174684591801.

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 73886656041 + 1008068208676 = 271821^2 + 1004026^2 .

It is a cyclic number.

It is not a de Polignac number, because 1081954864717 - 2³ = 1081954864709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081954864747) 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, 1585492 + ... + 2162797.

It is an arithmetic number, because the mean of its divisors is an integer number (270489725415).

Almost surely, 2^{1081954864717} is an apocalyptic number.

It is an amenable number.

1081954864717 is a deficient number, since it is larger than the sum of its proper divisors (4036943).

1081954864717 is an equidigital number, since it uses as much as digits as its factorization.

1081954864717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4036942.

The product of its (nonzero) digits is 13547520, while the sum is 61.

The spelling of 1081954864717 in words is "one trillion, eighty-one billion, nine hundred fifty-four million, eight hundred sixty-four thousand, seven hundred seventeen".