10997561441 has 8 divisors (see below), whose sum is σ = 11030227560. Its totient is φ = 10964944512.

The previous prime is 10997561359. The next prime is 10997561461. The reversal of 10997561441 is 14416579901.

It can be written as a sum of positive squares in 4 ways, for example, as 131583841 + 10865977600 = 11471^2 + 104240^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10997561441 - 2¹⁴ = 10997545057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10997561461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 462245 + ... + 485453.

It is an arithmetic number, because the mean of its divisors is an integer number (1378778445).

Almost surely, 2^10997561441 is an apocalyptic number.

It is an amenable number.

10997561441 is a deficient number, since it is larger than the sum of its proper divisors (32666119).

10997561441 is an equidigital number, since it uses as much as digits as its factorization.

10997561441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24595.

The product of its (nonzero) digits is 272160, while the sum is 47.

The spelling of 10997561441 in words is "ten billion, nine hundred ninety-seven million, five hundred sixty-one thousand, four hundred forty-one".