10561413556 has 6 divisors (see below), whose sum is σ = 18482473730. Its totient is φ = 5280706776.

The previous prime is 10561413521. The next prime is 10561413559. The reversal of 10561413556 is 65531416501.

It can be written as a sum of positive squares in only one way, i.e., 7869464100 + 2691949456 = 88710^2 + 51884^2 .

It is a super-2 number, since 2×10561413556² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10561413559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1320176691 + ... + 1320176698.

Almost surely, 2^10561413556 is an apocalyptic number.

It is an amenable number.

10561413556 is a deficient number, since it is larger than the sum of its proper divisors (7921060174).

10561413556 is a wasteful number, since it uses less digits than its factorization.

10561413556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2640353393 (or 2640353391 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 37.

The spelling of 10561413556 in words is "ten billion, five hundred sixty-one million, four hundred thirteen thousand, five hundred fifty-six".