10561655716671 has 4 divisors (see below), whose sum is σ = 14082207622232. Its totient is φ = 7041103811112.

The previous prime is 10561655716643. The next prime is 10561655716697. The reversal of 10561655716671 is 17661755616501.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 10561655716671 - 2⁶ = 10561655716607 is a prime.

It is a super-2 number, since 2×10561655716671² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10561655716631) 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, 1760275952776 + ... + 1760275952781.

It is an arithmetic number, because the mean of its divisors is an integer number (3520551905558).

Almost surely, 2^{10561655716671} is an apocalyptic number.

10561655716671 is a deficient number, since it is larger than the sum of its proper divisors (3520551905561).

10561655716671 is an equidigital number, since it uses as much as digits as its factorization.

10561655716671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3520551905560.

The product of its (nonzero) digits is 7938000, while the sum is 57.

The spelling of 10561655716671 in words is "ten trillion, five hundred sixty-one billion, six hundred fifty-five million, seven hundred sixteen thousand, six hundred seventy-one".