10561116505 has 8 divisors (see below), whose sum is σ = 12674520000. Its totient is φ = 8448106416.

The previous prime is 10561116451. The next prime is 10561116593. The reversal of 10561116505 is 50561116501.

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 10561116505 - 2¹⁵ = 10561083737 is a prime.

It is a super-2 number, since 2×10561116505² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35655 + ... + 149644.

It is an arithmetic number, because the mean of its divisors is an integer number (1584315000).

Almost surely, 2^10561116505 is an apocalyptic number.

It is an amenable number.

10561116505 is a deficient number, since it is larger than the sum of its proper divisors (2113403495).

10561116505 is a wasteful number, since it uses less digits than its factorization.

10561116505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196703.

The product of its (nonzero) digits is 4500, while the sum is 31.

The spelling of 10561116505 in words is "ten billion, five hundred sixty-one million, one hundred sixteen thousand, five hundred five".