10741661561 has 4 divisors (see below), whose sum is σ = 10744406400. Its totient is φ = 10738916724.

The previous prime is 10741661537. The next prime is 10741661611. The reversal of 10741661561 is 16516614701.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16516614701 = 41 ⋅402844261.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10741661561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10741667561) 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, 1366541 + ... + 1374378.

It is an arithmetic number, because the mean of its divisors is an integer number (2686101600).

Almost surely, 2^10741661561 is an apocalyptic number.

It is an amenable number.

10741661561 is a deficient number, since it is larger than the sum of its proper divisors (2744839).

10741661561 is an equidigital number, since it uses as much as digits as its factorization.

10741661561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2744838.

The product of its (nonzero) digits is 30240, while the sum is 38.

The spelling of 10741661561 in words is "ten billion, seven hundred forty-one million, six hundred sixty-one thousand, five hundred sixty-one".