10561316409 has 16 divisors (see below), whose sum is σ = 17881594240. Its totient is φ = 6035037840.

The previous prime is 10561316407. The next prime is 10561316429. The reversal of 10561316409 is 90461316501.

10561316409 is a `hidden beast` number, since 1 + 0 + 5 + 6 + 1 + 3 + 1 + 640 + 9 = 666.

It is not a de Polignac number, because 10561316409 - 2¹ = 10561316407 is a prime.

It is a super-2 number, since 2×10561316409² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10561316407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27939802 + ... + 27940179.

It is an arithmetic number, because the mean of its divisors is an integer number (1117599640).

Almost surely, 2^10561316409 is an apocalyptic number.

It is an amenable number.

10561316409 is a deficient number, since it is larger than the sum of its proper divisors (7320277831).

10561316409 is an equidigital number, since it uses as much as digits as its factorization.

10561316409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55879997 (or 55879991 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The spelling of 10561316409 in words is "ten billion, five hundred sixty-one million, three hundred sixteen thousand, four hundred nine".