1797009960961 has 4 divisors (see below), whose sum is σ = 1797480263124. Its totient is φ = 1796539658800.

The previous prime is 1797009960929. The next prime is 1797009961003. The reversal of 1797009960961 is 1690699007971.

It is a happy number.

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 1121089204225 + 675920756736 = 1058815^2 + 822144^2 .

It is a cyclic number.

It is not a de Polignac number, because 1797009960961 - 2⁵ = 1797009960929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1797009960893 and 1797009960902.

It is not an unprimeable number, because it can be changed into a prime (1797009960901) 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, 235145350 + ... + 235152991.

It is an arithmetic number, because the mean of its divisors is an integer number (449370065781).

Almost surely, 2^{1797009960961} is an apocalyptic number.

It is an amenable number.

1797009960961 is a deficient number, since it is larger than the sum of its proper divisors (470302163).

1797009960961 is an equidigital number, since it uses as much as digits as its factorization.

1797009960961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470302162.

The product of its (nonzero) digits is 11573604, while the sum is 64.

The spelling of 1797009960961 in words is "one trillion, seven hundred ninety-seven billion, nine million, nine hundred sixty thousand, nine hundred sixty-one".